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52012513 = 731239689
BaseRepresentation
bin1100011001101…
…0010111100001
310121212111202101
43012122113201
5101303400023
65054450401
71201045660
oct306322741
9117774671
1052012513
11273a5853
1215503a01
13aa11447
146c9cdd7
1548761ad
hex319a5e1

52012513 has 8 divisors (see below), whose sum is σ = 61360640. Its totient is φ = 43143840.

The previous prime is 52012501. The next prime is 52012523. The reversal of 52012513 is 31521025.

52012513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52012513 - 29 = 52012001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52012523) 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 7 ways as a sum of consecutive naturals, for example, 119628 + ... + 120061.

It is an arithmetic number, because the mean of its divisors is an integer number (7670080).

Almost surely, 252012513 is an apocalyptic number.

It is an amenable number.

52012513 is a deficient number, since it is larger than the sum of its proper divisors (9348127).

52012513 is a wasteful number, since it uses less digits than its factorization.

52012513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239727.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 52012513 is about 7211.9701191838. The cubic root of 52012513 is about 373.2810523268.

Adding to 52012513 its reverse (31521025), we get a palindrome (83533538).

It can be divided in two parts, 52012 and 513, that added together give a palindrome (52525).

The spelling of 52012513 in words is "fifty-two million, twelve thousand, five hundred thirteen".

Divisors: 1 7 31 217 239689 1677823 7430359 52012513