55078131 has 12 divisors (see below), whose sum is σ = 77507592. Its totient is φ = 34785504.

The previous prime is 55078109. The next prime is 55078151. The reversal of 55078131 is 13187055.

It is not a de Polignac number, because 55078131 - 2⁵ = 55078099 is a prime.

It is a super-2 number, since 2×55078131² = 6067201028906322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55078151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24346 + ... + 26511.

It is an arithmetic number, because the mean of its divisors is an integer number (6458966).

Almost surely, 2^55078131 is an apocalyptic number.

55078131 is a deficient number, since it is larger than the sum of its proper divisors (22429461).

55078131 is a wasteful number, since it uses less digits than its factorization.

55078131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50898 (or 50879 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 55078131 is about 7421.4642086316. The cubic root of 55078131 is about 380.4752387386.

The spelling of 55078131 in words is "fifty-five million, seventy-eight thousand, one hundred thirty-one".