55774128 has 40 divisors (see below), whose sum is σ = 144832000. Its totient is φ = 18494784.

The previous prime is 55774123. The next prime is 55774129. The reversal of 55774128 is 82147755.

It is a super-2 number, since 2×55774128² = 6221506708320768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55774123) 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, 6633 + ... + 12471.

It is an arithmetic number, because the mean of its divisors is an integer number (3620800).

Almost surely, 2^55774128 is an apocalyptic number.

It is an amenable number.

55774128 is an abundant number, since it is smaller than the sum of its proper divisors (89057872).

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

55774128 is a wasteful number, since it uses less digits than its factorization.

55774128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049 (or 6043 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 55774128 is about 7468.2078171406. The cubic root of 55774128 is about 382.0711653457.

The spelling of 55774128 in words is "fifty-five million, seven hundred seventy-four thousand, one hundred twenty-eight".