55857712 has 20 divisors (see below), whose sum is σ = 111957120. Its totient is φ = 26965568.

The previous prime is 55857689. The next prime is 55857743. The reversal of 55857712 is 21775855.

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, 59728 + ... + 60655.

It is an arithmetic number, because the mean of its divisors is an integer number (5597856).

Almost surely, 2^55857712 is an apocalyptic number.

It is an amenable number.

55857712 is an abundant number, since it is smaller than the sum of its proper divisors (56099408).

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

55857712 is a wasteful number, since it uses less digits than its factorization.

55857712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120420 (or 120414 counting only the distinct ones).

The product of its digits is 98000, while the sum is 40.

The square root of 55857712 is about 7473.8017099733. The cubic root of 55857712 is about 382.2619294025.

The spelling of 55857712 in words is "fifty-five million, eight hundred fifty-seven thousand, seven hundred twelve".