57270661 has 6 divisors (see below), whose sum is σ = 66621030. Its totient is φ = 49089096.

The previous prime is 57270649. The next prime is 57270691. The reversal of 57270661 is 16607275.

57270661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47348161 + 9922500 = 6881^2 + 3150^2 .

It is not a de Polignac number, because 57270661 - 2⁹ = 57270149 is a prime.

It is a super-2 number, since 2×57270661² = 6559857222753842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57270601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584346 + ... + 584443.

It is an arithmetic number, because the mean of its divisors is an integer number (11103505).

Almost surely, 2^57270661 is an apocalyptic number.

It is an amenable number.

57270661 is a deficient number, since it is larger than the sum of its proper divisors (9350369).

57270661 is a wasteful number, since it uses less digits than its factorization.

57270661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168803 (or 1168796 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 57270661 is about 7567.7381693608. The cubic root of 57270661 is about 385.4582972098.

The spelling of 57270661 in words is "fifty-seven million, two hundred seventy thousand, six hundred sixty-one".