87051657 has 16 divisors (see below), whose sum is σ = 144709632. Its totient is φ = 45221520.

The previous prime is 87051641. The next prime is 87051667. The reversal of 87051657 is 75615078.

It is not a de Polignac number, because 87051657 - 2⁴ = 87051641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87051667) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 188193 + ... + 188654.

It is an arithmetic number, because the mean of its divisors is an integer number (9044352).

Almost surely, 2^87051657 is an apocalyptic number.

It is an amenable number.

87051657 is a deficient number, since it is larger than the sum of its proper divisors (57657975).

87051657 is a wasteful number, since it uses less digits than its factorization.

87051657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376868.

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

The square root of 87051657 is about 9330.1477480263. The cubic root of 87051657 is about 443.1924439085.

The spelling of 87051657 in words is "eighty-seven million, fifty-one thousand, six hundred fifty-seven".