87427556 has 6 divisors (see below), whose sum is σ = 152998230. Its totient is φ = 43713776.

The previous prime is 87427541. The next prime is 87427591. The reversal of 87427556 is 65572478.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 33640000 = 7334^2 + 5800^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10928441 + ... + 10928448.

It is an arithmetic number, because the mean of its divisors is an integer number (25499705).

Almost surely, 2^87427556 is an apocalyptic number.

It is an amenable number.

87427556 is a deficient number, since it is larger than the sum of its proper divisors (65570674).

87427556 is a wasteful number, since it uses less digits than its factorization.

87427556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21856893 (or 21856891 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 87427556 is about 9350.2703704225. The cubic root of 87427556 is about 443.8294464381.

The spelling of 87427556 in words is "eighty-seven million, four hundred twenty-seven thousand, five hundred fifty-six".