55918560 has 96 divisors (see below), whose sum is σ = 178107552. Its totient is φ = 14745600.

The previous prime is 55918523. The next prime is 55918567. The reversal of 55918560 is 6581955.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55918567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45960 + ... + 47160.

It is an arithmetic number, because the mean of its divisors is an integer number (1855287).

Almost surely, 2^55918560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55918560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89053776).

55918560 is an abundant number, since it is smaller than the sum of its proper divisors (122188992).

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

55918560 is a wasteful number, since it uses less digits than its factorization.

55918560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1308 counting only the distinct ones).

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

The square root of 55918560 is about 7477.8713548710. The cubic root of 55918560 is about 382.4006833435.

The spelling of 55918560 in words is "fifty-five million, nine hundred eighteen thousand, five hundred sixty".