55009960 has 32 divisors (see below), whose sum is σ = 131054760. Its totient is φ = 20709376.

The previous prime is 55009957. The next prime is 55010003. The reversal of 55009960 is 6990055.

It can be written as a sum of positive squares in 4 ways, for example, as 54671236 + 338724 = 7394^2 + 582^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39769 + ... + 41128.

Almost surely, 2^55009960 is an apocalyptic number.

It is an amenable number.

55009960 is an abundant number, since it is smaller than the sum of its proper divisors (76044800).

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

55009960 is a wasteful number, since it uses less digits than its factorization.

55009960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80925 (or 80921 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55009960 is about 7416.8699597607. The cubic root of 55009960 is about 380.3182006945.

The spelling of 55009960 in words is "fifty-five million, nine thousand, nine hundred sixty".