87157056 has 56 divisors (see below), whose sum is σ = 263550400. Its totient is φ = 24901632.

The previous prime is 87157033. The next prime is 87157061. The reversal of 87157056 is 65075178.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31081 + ... + 33768.

Almost surely, 2^87157056 is an apocalyptic number.

It is an amenable number.

87157056 is an abundant number, since it is smaller than the sum of its proper divisors (176393344).

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

87157056 is a wasteful number, since it uses less digits than its factorization.

87157056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64871 (or 64861 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 87157056 is about 9335.7943422078. The cubic root of 87157056 is about 443.3712388994.

The spelling of 87157056 in words is "eighty-seven million, one hundred fifty-seven thousand, fifty-six".