55709528 has 16 divisors (see below), whose sum is σ = 119377680. Its totient is φ = 23875488.

The previous prime is 55709513. The next prime is 55709557. The reversal of 55709528 is 82590755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497351 + ... + 497462.

It is an arithmetic number, because the mean of its divisors is an integer number (7461105).

Almost surely, 2^55709528 is an apocalyptic number.

It is an amenable number.

55709528 is an abundant number, since it is smaller than the sum of its proper divisors (63668152).

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

55709528 is a wasteful number, since it uses less digits than its factorization.

55709528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994826 (or 994822 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 55709528 is about 7463.8815639049. The cubic root of 55709528 is about 381.9235979252.

The spelling of 55709528 in words is "fifty-five million, seven hundred nine thousand, five hundred twenty-eight".