55055544 has 16 divisors (see below), whose sum is σ = 137638920. Its totient is φ = 18351840.

The previous prime is 55055479. The next prime is 55055569. The reversal of 55055544 is 44555055.

It is a super-2 number, since 2×55055544² = 6062225850271872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146967 + ... + 1147014.

Almost surely, 2^55055544 is an apocalyptic number.

It is an amenable number.

55055544 is an abundant number, since it is smaller than the sum of its proper divisors (82583376).

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

55055544 is a wasteful number, since it uses less digits than its factorization.

55055544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293990 (or 2293986 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 55055544 is about 7419.9423178351. The cubic root of 55055544 is about 380.4232219092.

The spelling of 55055544 in words is "fifty-five million, fifty-five thousand, five hundred forty-four".