55785574124 has 12 divisors (see below), whose sum is σ = 111571148304. Its totient is φ = 23908103184.

The previous prime is 55785574121. The next prime is 55785574153. The reversal of 55785574124 is 42147558755.

55785574124 is an admirable number.

It is a super-2 number, since 2×55785574124² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55785574121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996170939 + ... + 996170994.

It is an arithmetic number, because the mean of its divisors is an integer number (9297595692).

Almost surely, 2^55785574124 is an apocalyptic number.

It is an amenable number.

55785574124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55785574124 is a wasteful number, since it uses less digits than its factorization.

55785574124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992341944 (or 1992341942 counting only the distinct ones).

The product of its digits is 7840000, while the sum is 53.

The spelling of 55785574124 in words is "fifty-five billion, seven hundred eighty-five million, five hundred seventy-four thousand, one hundred twenty-four".