52640456 has 16 divisors (see below), whose sum is σ = 107673840. Its totient is φ = 23927440.

The previous prime is 52640453. The next prime is 52640461. The reversal of 52640456 is 65404625.

It is not an unprimeable number, because it can be changed into a prime (52640453) 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, 299006 + ... + 299181.

It is an arithmetic number, because the mean of its divisors is an integer number (6729615).

Almost surely, 2^52640456 is an apocalyptic number.

It is an amenable number.

52640456 is an abundant number, since it is smaller than the sum of its proper divisors (55033384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52640456 is a wasteful number, since it uses less digits than its factorization.

52640456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598204 (or 598200 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 52640456 is about 7255.3742839360. The cubic root of 52640456 is about 374.7772448918. Note that the first 3 decimals are identical.

The spelling of 52640456 in words is "fifty-two million, six hundred forty thousand, four hundred fifty-six".