52505121 has 4 divisors (see below), whose sum is σ = 70006832. Its totient is φ = 35003412.

The previous prime is 52505119. The next prime is 52505137. The reversal of 52505121 is 12150525.

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 not a de Polignac number, because 52505121 - 2¹ = 52505119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52505171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750851 + ... + 8750856.

It is an arithmetic number, because the mean of its divisors is an integer number (17501708).

Almost surely, 2^52505121 is an apocalyptic number.

It is an amenable number.

52505121 is a deficient number, since it is larger than the sum of its proper divisors (17501711).

52505121 is a wasteful number, since it uses less digits than its factorization.

52505121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501710.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 52505121 is about 7246.0417470506. The cubic root of 52505121 is about 374.4557937319.

Adding to 52505121 its reverse (12150525), we get a palindrome (64655646).

The spelling of 52505121 in words is "fifty-two million, five hundred five thousand, one hundred twenty-one".