87055137 has 24 divisors (see below), whose sum is σ = 136136000. Its totient is φ = 53288928.

The previous prime is 87055123. The next prime is 87055141. The reversal of 87055137 is 73155078.

87055137 is a `hidden beast` number, since 8 + 70 + 551 + 37 = 666.

It is not a de Polignac number, because 87055137 - 2⁴ = 87055121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87065137) 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 23 ways as a sum of consecutive naturals, for example, 21414 + ... + 25152.

Almost surely, 2^87055137 is an apocalyptic number.

It is an amenable number.

87055137 is a deficient number, since it is larger than the sum of its proper divisors (49080863).

87055137 is a wasteful number, since it uses less digits than its factorization.

87055137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957 (or 3954 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 87055137 is about 9330.3342383861. The cubic root of 87055137 is about 443.1983495558.

The spelling of 87055137 in words is "eighty-seven million, fifty-five thousand, one hundred thirty-seven".