56550918 has 16 divisors (see below), whose sum is σ = 113330160. Its totient is φ = 18812256.

The previous prime is 56550889. The next prime is 56550919. The reversal of 56550918 is 81905565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56550919) 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, 6205 + ... + 12312.

It is an arithmetic number, because the mean of its divisors is an integer number (7083135).

Almost surely, 2^56550918 is an apocalyptic number.

56550918 is an abundant number, since it is smaller than the sum of its proper divisors (56779242).

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

56550918 is a wasteful number, since it uses less digits than its factorization.

56550918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19031.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 56550918 is about 7520.0344414105. The cubic root of 56550918 is about 383.8367497260.

The spelling of 56550918 in words is "fifty-six million, five hundred fifty thousand, nine hundred eighteen".