55939144 has 16 divisors (see below), whose sum is σ = 108503100. Its totient is φ = 27004992.

The previous prime is 55939141. The next prime is 55939187. The reversal of 55939144 is 44193955.

It can be written as a sum of positive squares in 2 ways, for example, as 47748100 + 8191044 = 6910^2 + 2862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55939097 and 55939106.

It is not an unprimeable number, because it can be changed into a prime (55939141) 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, 120327 + ... + 120790.

Almost surely, 2^55939144 is an apocalyptic number.

It is an amenable number.

55939144 is a deficient number, since it is larger than the sum of its proper divisors (52563956).

55939144 is a wasteful number, since it uses less digits than its factorization.

55939144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241152 (or 241148 counting only the distinct ones).

The product of its digits is 97200, while the sum is 40.

The square root of 55939144 is about 7479.2475557371. The cubic root of 55939144 is about 382.4475990130.

The spelling of 55939144 in words is "fifty-five million, nine hundred thirty-nine thousand, one hundred forty-four".