87556091 has 12 divisors (see below), whose sum is σ = 102013128. Its totient is φ = 74928672.

The previous prime is 87556087. The next prime is 87556109. The reversal of 87556091 is 19065578.

It is not a de Polignac number, because 87556091 - 2² = 87556087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87556061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44960 + ... + 46866.

It is an arithmetic number, because the mean of its divisors is an integer number (8501094).

Almost surely, 2^87556091 is an apocalyptic number.

87556091 is a deficient number, since it is larger than the sum of its proper divisors (14457037).

87556091 is a wasteful number, since it uses less digits than its factorization.

87556091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858 (or 2851 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 87556091 is about 9357.1411766629. The cubic root of 87556091 is about 444.0468442716.

The spelling of 87556091 in words is "eighty-seven million, five hundred fifty-six thousand, ninety-one".