52640886 has 8 divisors (see below), whose sum is σ = 105281784. Its totient is φ = 17546960.

The previous prime is 52640881. The next prime is 52640927. The reversal of 52640886 is 68804625.

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

52640886 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640881) 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, 4386735 + ... + 4386746.

It is an arithmetic number, because the mean of its divisors is an integer number (13160223).

Almost surely, 2^52640886 is an apocalyptic number.

52640886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52640886 is a wasteful number, since it uses less digits than its factorization.

52640886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8773486.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 52640886 is about 7255.4039170814. The cubic root of 52640886 is about 374.7782653603.

The spelling of 52640886 in words is "fifty-two million, six hundred forty thousand, eight hundred eighty-six".