87427557 has 48 divisors (see below), whose sum is σ = 150458880. Its totient is φ = 47882016.

The previous prime is 87427541. The next prime is 87427591. The reversal of 87427557 is 75572478.

87427557 is a `hidden beast` number, since 8 + 74 + 27 + 557 = 666.

It is not a de Polignac number, because 87427557 - 2⁴ = 87427541 is a prime.

It is a super-3 number, since 3×87427557³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87427517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159558 + ... + 160104.

It is an arithmetic number, because the mean of its divisors is an integer number (3134560).

Almost surely, 2^87427557 is an apocalyptic number.

It is an amenable number.

87427557 is a deficient number, since it is larger than the sum of its proper divisors (63031323).

87427557 is a wasteful number, since it uses less digits than its factorization.

87427557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 659 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 87427557 is about 9350.2704238968. The cubic root of 87427557 is about 443.8294481303.

The spelling of 87427557 in words is "eighty-seven million, four hundred twenty-seven thousand, five hundred fifty-seven".