57556772 has 60 divisors (see below), whose sum is σ = 126818076. Its totient is φ = 22720320.

The previous prime is 57556771. The next prime is 57556783. The reversal of 57556772 is 27765575.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13147876 + 44408896 = 3626^2 + 6664^2 .

It is not an unprimeable number, because it can be changed into a prime (57556771) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124622 + ... + 125082.

Almost surely, 2^57556772 is an apocalyptic number.

57556772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57556772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63409038).

57556772 is an abundant number, since it is smaller than the sum of its proper divisors (69261304).

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

57556772 is a wasteful number, since it uses less digits than its factorization.

57556772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 483 counting only the distinct ones).

The product of its digits is 514500, while the sum is 44.

The square root of 57556772 is about 7586.6179553211. The cubic root of 57556772 is about 386.0991181472.

The spelling of 57556772 in words is "fifty-seven million, five hundred fifty-six thousand, seven hundred seventy-two".