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52120753 = 371408669
BaseRepresentation
bin1100011011010…
…0110010110001
310122002000020021
43012310302301
5101320331003
65101043441
71202006356
oct306646261
9118060207
1052120753
112746a103
1215556581
13aa4b7a9
146cca62d
1548982bd
hex31b4cb1

52120753 has 4 divisors (see below), whose sum is σ = 53529460. Its totient is φ = 50712048.

The previous prime is 52120751. The next prime is 52120769. The reversal of 52120753 is 35702125.

52120753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41177889 + 10942864 = 6417^2 + 3308^2 .

It is a cyclic number.

It is not a de Polignac number, because 52120753 - 21 = 52120751 is a prime.

It is a super-3 number, since 3×521207533 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52120751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704298 + ... + 704371.

It is an arithmetic number, because the mean of its divisors is an integer number (13382365).

Almost surely, 252120753 is an apocalyptic number.

It is an amenable number.

52120753 is a deficient number, since it is larger than the sum of its proper divisors (1408707).

52120753 is a wasteful number, since it uses less digits than its factorization.

52120753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408706.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 52120753 is about 7219.4704099401. The cubic root of 52120753 is about 373.5398102279.

Adding to 52120753 its reverse (35702125), we get a palindrome (87822878).

The spelling of 52120753 in words is "fifty-two million, one hundred twenty thousand, seven hundred fifty-three".

Divisors: 1 37 1408669 52120753