52642521 has 32 divisors (see below), whose sum is σ = 83088000. Its totient is φ = 32845824.

The previous prime is 52642517. The next prime is 52642529. The reversal of 52642521 is 12524625.

It is not a de Polignac number, because 52642521 - 2² = 52642517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52642529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45081 + ... + 46233.

It is an arithmetic number, because the mean of its divisors is an integer number (2596500).

Almost surely, 2^52642521 is an apocalyptic number.

It is an amenable number.

52642521 is a deficient number, since it is larger than the sum of its proper divisors (30445479).

52642521 is a wasteful number, since it uses less digits than its factorization.

52642521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270 (or 1264 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52642521 is about 7255.5165908431. The cubic root of 52642521 is about 374.7821454629.

The spelling of 52642521 in words is "fifty-two million, six hundred forty-two thousand, five hundred twenty-one".