55174140 has 72 divisors (see below), whose sum is σ = 191274720. Its totient is φ = 12610944.

The previous prime is 55174139. The next prime is 55174177. The reversal of 55174140 is 4147155.

It is a happy number.

55174140 is a `hidden beast` number, since 5 + 517 + 4 + 140 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20635 + ... + 23154.

Almost surely, 2^55174140 is an apocalyptic number.

It is an amenable number.

55174140 is an abundant number, since it is smaller than the sum of its proper divisors (136100580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55174140 is a wasteful number, since it uses less digits than its factorization.

55174140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43811 (or 43806 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 55174140 is about 7427.9297250311. The cubic root of 55174140 is about 380.6961845233.

It can be divided in two parts, 551 and 74140, that added together give a triangular number (74691 = T₃₈₆).

The spelling of 55174140 in words is "fifty-five million, one hundred seventy-four thousand, one hundred forty".