57884681 has 4 divisors (see below), whose sum is σ = 57910164. Its totient is φ = 57859200.

The previous prime is 57884647. The next prime is 57884689. The reversal of 57884681 is 18648875.

It is a happy number.

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 13542400 + 44342281 = 3680^2 + 6659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57884681 is a prime.

It is a super-2 number, since 2×57884681² = 6701272588943522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57884689) 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, 8960 + ... + 14001.

It is an arithmetic number, because the mean of its divisors is an integer number (14477541).

Almost surely, 2^57884681 is an apocalyptic number.

It is an amenable number.

57884681 is a deficient number, since it is larger than the sum of its proper divisors (25483).

57884681 is a wasteful number, since it uses less digits than its factorization.

57884681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25482.

The product of its digits is 430080, while the sum is 47.

The square root of 57884681 is about 7608.1982755446. The cubic root of 57884681 is about 386.8309503881.

The spelling of 57884681 in words is "fifty-seven million, eight hundred eighty-four thousand, six hundred eighty-one".