53087864 has 32 divisors (see below), whose sum is σ = 107460000. Its totient is φ = 24511872.

The previous prime is 53087857. The next prime is 53087869. The reversal of 53087864 is 46878035.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53087869) 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, 362 + ... + 10310.

It is an arithmetic number, because the mean of its divisors is an integer number (3358125).

Almost surely, 2^53087864 is an apocalyptic number.

It is an amenable number.

53087864 is an abundant number, since it is smaller than the sum of its proper divisors (54372136).

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

53087864 is a wasteful number, since it uses less digits than its factorization.

53087864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10007 (or 10003 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 53087864 is about 7286.1419146212. The cubic root of 53087864 is about 375.8360345898.

The spelling of 53087864 in words is "fifty-three million, eighty-seven thousand, eight hundred sixty-four".