55087044 has 24 divisors (see below), whose sum is σ = 128664480. Its totient is φ = 18344064.

The previous prime is 55087033. The next prime is 55087049. The reversal of 55087044 is 44078055.

It is a junction number, because it is equal to n+sod(n) for n = 55086996 and 55087014.

It is not an unprimeable number, because it can be changed into a prime (55087049) 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, 16327 + ... + 19409.

It is an arithmetic number, because the mean of its divisors is an integer number (5361020).

Almost surely, 2^55087044 is an apocalyptic number.

It is an amenable number.

55087044 is an abundant number, since it is smaller than the sum of its proper divisors (73577436).

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

55087044 is a wasteful number, since it uses less digits than its factorization.

55087044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579 (or 4577 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 55087044 is about 7422.0646723132. The cubic root of 55087044 is about 380.4957610574.

The spelling of 55087044 in words is "fifty-five million, eighty-seven thousand, forty-four".