52811521 has 8 divisors (see below), whose sum is σ = 60791360. Its totient is φ = 44940528.

The previous prime is 52811513. The next prime is 52811527. The reversal of 52811521 is 12511825.

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

It is a cyclic number.

It is not a de Polignac number, because 52811521 - 2³ = 52811513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52811527) 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, 26166 + ... + 28111.

It is an arithmetic number, because the mean of its divisors is an integer number (7598920).

Almost surely, 2^52811521 is an apocalyptic number.

It is an amenable number.

52811521 is a deficient number, since it is larger than the sum of its proper divisors (7979839).

52811521 is a wasteful number, since it uses less digits than its factorization.

52811521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54423.

The product of its digits is 800, while the sum is 25.

The square root of 52811521 is about 7267.1535693145. The cubic root of 52811521 is about 375.1827754931.

The spelling of 52811521 in words is "fifty-two million, eight hundred eleven thousand, five hundred twenty-one".