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52999961 = 77571423
BaseRepresentation
bin1100101000101…
…1011100011001
310200201200021112
43022023130121
5102031444321
65131550105
71212330560
oct312133431
9120650245
1052999961
1127a0a723
12158bb335
13ac98a31
147078bd7
1549bda5b
hex328b719

52999961 has 4 divisors (see below), whose sum is σ = 60571392. Its totient is φ = 45428532.

The previous prime is 52999937. The next prime is 52999963. The reversal of 52999961 is 16999925.

52999961 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52999961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52999963) 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, 3785705 + ... + 3785718.

It is an arithmetic number, because the mean of its divisors is an integer number (15142848).

Almost surely, 252999961 is an apocalyptic number.

It is an amenable number.

52999961 is a deficient number, since it is larger than the sum of its proper divisors (7571431).

52999961 is an equidigital number, since it uses as much as digits as its factorization.

52999961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571430.

The product of its digits is 393660, while the sum is 50.

The square root of 52999961 is about 7280.1072107490. The cubic root of 52999961 is about 375.6284832868.

The spelling of 52999961 in words is "fifty-two million, nine hundred ninety-nine thousand, nine hundred sixty-one".

Divisors: 1 7 7571423 52999961