52621513 has 8 divisors (see below), whose sum is σ = 60184832. Its totient is φ = 45069696.

The previous prime is 52621487. The next prime is 52621523. The reversal of 52621513 is 31512625.

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

It is a de Polignac number, because none of the positive numbers 2^k-52621513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52621523) 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, 12256 + ... + 15982.

It is an arithmetic number, because the mean of its divisors is an integer number (7523104).

Almost surely, 2^52621513 is an apocalyptic number.

It is an amenable number.

52621513 is a deficient number, since it is larger than the sum of its proper divisors (7563319).

52621513 is a wasteful number, since it uses less digits than its factorization.

52621513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751.

The product of its digits is 1800, while the sum is 25.

The square root of 52621513 is about 7254.0687203803. The cubic root of 52621513 is about 374.7322841800.

The spelling of 52621513 in words is "fifty-two million, six hundred twenty-one thousand, five hundred thirteen".