57533556 has 12 divisors (see below), whose sum is σ = 134244992. Its totient is φ = 19177848.

The previous prime is 57533549. The next prime is 57533573. The reversal of 57533556 is 65533575.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×57533556² = 6620220132010272, which contains 22 as substring.

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, 2397220 + ... + 2397243.

Almost surely, 2^57533556 is an apocalyptic number.

It is an amenable number.

57533556 is an abundant number, since it is smaller than the sum of its proper divisors (76711436).

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

57533556 is a wasteful number, since it uses less digits than its factorization.

57533556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4794470 (or 4794468 counting only the distinct ones).

The product of its digits is 236250, while the sum is 39.

The square root of 57533556 is about 7585.0877384510. The cubic root of 57533556 is about 386.0471990750.

The spelling of 57533556 in words is "fifty-seven million, five hundred thirty-three thousand, five hundred fifty-six".