57572261 has 4 divisors (see below), whose sum is σ = 60602400. Its totient is φ = 54542124.

The previous prime is 57572233. The next prime is 57572287. The reversal of 57572261 is 16227575.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57572261 - 2²² = 53377957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57572201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515041 + ... + 1515078.

It is an arithmetic number, because the mean of its divisors is an integer number (15150600).

Almost surely, 2^57572261 is an apocalyptic number.

It is an amenable number.

57572261 is a deficient number, since it is larger than the sum of its proper divisors (3030139).

57572261 is a wasteful number, since it uses less digits than its factorization.

57572261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030138.

The product of its digits is 29400, while the sum is 35.

The square root of 57572261 is about 7587.6386972496. The cubic root of 57572261 is about 386.1337491886.

The spelling of 57572261 in words is "fifty-seven million, five hundred seventy-two thousand, two hundred sixty-one".