57971648 has 28 divisors (see below), whose sum is σ = 131472432. Its totient is φ = 24844800.

The previous prime is 57971647. The next prime is 57971651. The reversal of 57971648 is 84617975.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57971647) 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, 64253 + ... + 65148.

It is an arithmetic number, because the mean of its divisors is an integer number (4695444).

Almost surely, 2^57971648 is an apocalyptic number.

It is an amenable number.

57971648 is an abundant number, since it is smaller than the sum of its proper divisors (73500784).

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

57971648 is a wasteful number, since it uses less digits than its factorization.

57971648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129420 (or 129410 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 57971648 is about 7613.9114783402. The cubic root of 57971648 is about 387.0245807399.

It can be divided in two parts, 579 and 71648, that added together give a palindrome (72227).

The spelling of 57971648 in words is "fifty-seven million, nine hundred seventy-one thousand, six hundred forty-eight".