55057137 has 16 divisors (see below), whose sum is σ = 76120128. Its totient is φ = 35371520.

The previous prime is 55057133. The next prime is 55057153. The reversal of 55057137 is 73175055.

It is not a de Polignac number, because 55057137 - 2² = 55057133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55057098 and 55057107.

It is not an unprimeable number, because it can be changed into a prime (55057133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7513 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (4757508).

Almost surely, 2^55057137 is an apocalyptic number.

It is an amenable number.

55057137 is a deficient number, since it is larger than the sum of its proper divisors (21062991).

55057137 is a wasteful number, since it uses less digits than its factorization.

55057137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520.

The product of its (nonzero) digits is 18375, while the sum is 33.

The square root of 55057137 is about 7420.0496629066. The cubic root of 55057137 is about 380.4268909817.

The spelling of 55057137 in words is "fifty-five million, fifty-seven thousand, one hundred thirty-seven".