55232560 has 20 divisors (see below), whose sum is σ = 128415888. Its totient is φ = 22092992.

The previous prime is 55232549. The next prime is 55232561. The reversal of 55232560 is 6523255.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (55232561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345124 + ... + 345283.

Almost surely, 2^55232560 is an apocalyptic number.

It is an amenable number.

55232560 is an abundant number, since it is smaller than the sum of its proper divisors (73183328).

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

55232560 is a wasteful number, since it uses less digits than its factorization.

55232560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690420 (or 690414 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 55232560 is about 7431.8611397146. The cubic root of 55232560 is about 380.8305012289.

The spelling of 55232560 in words is "fifty-five million, two hundred thirty-two thousand, five hundred sixty".