57470981 has 4 divisors (see below), whose sum is σ = 57488364. Its totient is φ = 57453600.

The previous prime is 57470927. The next prime is 57470983. The reversal of 57470981 is 18907475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33166081 + 24304900 = 5759^2 + 4930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57470981 is a prime.

It is a super-2 number, since 2×57470981² = 6605827314204722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57470983) 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, 2030 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (14372091).

Almost surely, 2^57470981 is an apocalyptic number.

It is an amenable number.

57470981 is a deficient number, since it is larger than the sum of its proper divisors (17383).

57470981 is a wasteful number, since it uses less digits than its factorization.

57470981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17382.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 57470981 is about 7580.9617463749. The cubic root of 57470981 is about 385.9071899606.

The spelling of 57470981 in words is "fifty-seven million, four hundred seventy thousand, nine hundred eighty-one".