525624521 has 8 divisors (see below), whose sum is σ = 528285888. Its totient is φ = 522970000.

The previous prime is 525624511. The next prime is 525624523. The reversal of 525624521 is 125426525.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525624521 is a prime.

It is a super-2 number, since 2×525624521² = 552562274152958882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525624523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216806 + ... + 219216.

It is an arithmetic number, because the mean of its divisors is an integer number (66035736).

Almost surely, 2^525624521 is an apocalyptic number.

It is an amenable number.

525624521 is a deficient number, since it is larger than the sum of its proper divisors (2661367).

525624521 is a wasteful number, since it uses less digits than its factorization.

525624521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423.

The product of its digits is 24000, while the sum is 32.

The square root of 525624521 is about 22926.5025897977. The cubic root of 525624521 is about 807.0340756448.

The spelling of 525624521 in words is "five hundred twenty-five million, six hundred twenty-four thousand, five hundred twenty-one".