87571144 has 32 divisors (see below), whose sum is σ = 167688000. Its totient is φ = 42863040.

The previous prime is 87571123. The next prime is 87571147. The reversal of 87571144 is 44117578.

It is a super-2 number, since 2×87571144² = 15337410522937472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87571147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106254 + ... + 107074.

It is an arithmetic number, because the mean of its divisors is an integer number (5240250).

Almost surely, 2^87571144 is an apocalyptic number.

It is an amenable number.

87571144 is a deficient number, since it is larger than the sum of its proper divisors (80116856).

87571144 is a wasteful number, since it uses less digits than its factorization.

87571144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1089 counting only the distinct ones).

The product of its digits is 31360, while the sum is 37.

The square root of 87571144 is about 9357.9455010168. The cubic root of 87571144 is about 444.0722902611.

The spelling of 87571144 in words is "eighty-seven million, five hundred seventy-one thousand, one hundred forty-four".