55757072 has 20 divisors (see below), whose sum is σ = 123462336. Its totient is φ = 23895840.

The previous prime is 55757071. The next prime is 55757099. The reversal of 55757072 is 27075755.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55757071) 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, 248804 + ... + 249027.

Almost surely, 2^55757072 is an apocalyptic number.

It is an amenable number.

55757072 is an abundant number, since it is smaller than the sum of its proper divisors (67705264).

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

55757072 is a wasteful number, since it uses less digits than its factorization.

55757072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497846 (or 497840 counting only the distinct ones).

The product of its (nonzero) digits is 85750, while the sum is 38.

The square root of 55757072 is about 7467.0658226642. The cubic root of 55757072 is about 382.0322149673.

The spelling of 55757072 in words is "fifty-five million, seven hundred fifty-seven thousand, seventy-two".