57981547 has 4 divisors (see below), whose sum is σ = 62441680. Its totient is φ = 53521416.

The previous prime is 57981541. The next prime is 57981557. The reversal of 57981547 is 74518975.

It is a happy number.

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

It is not a de Polignac number, because 57981547 - 2⁷ = 57981419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57981497 and 57981506.

It is not an unprimeable number, because it can be changed into a prime (57981541) 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, 2230047 + ... + 2230072.

It is an arithmetic number, because the mean of its divisors is an integer number (15610420).

Almost surely, 2^57981547 is an apocalyptic number.

57981547 is a deficient number, since it is larger than the sum of its proper divisors (4460133).

57981547 is a wasteful number, since it uses less digits than its factorization.

57981547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460132.

The product of its digits is 352800, while the sum is 46.

The square root of 57981547 is about 7614.5615106846. The cubic root of 57981547 is about 387.0466083943.

The spelling of 57981547 in words is "fifty-seven million, nine hundred eighty-one thousand, five hundred forty-seven".