55040560 has 40 divisors (see below), whose sum is σ = 135500256. Its totient is φ = 20720640.

The previous prime is 55040539. The next prime is 55040561. The reversal of 55040560 is 6504055.

55040560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×55040560² = 6058926490227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55040561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18876 + ... + 21595.

Almost surely, 2^55040560 is an apocalyptic number.

It is an amenable number.

55040560 is an abundant number, since it is smaller than the sum of its proper divisors (80459696).

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

55040560 is a wasteful number, since it uses less digits than its factorization.

55040560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40501 (or 40495 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55040560 is about 7418.9325377712. The cubic root of 55040560 is about 380.3887065916.

The spelling of 55040560 in words is "fifty-five million, forty thousand, five hundred sixty".