57464381 has 4 divisors (see below), whose sum is σ = 61884732. Its totient is φ = 53044032.

The previous prime is 57464357. The next prime is 57464401. The reversal of 57464381 is 18346475.

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 24344356 + 33120025 = 4934^2 + 5755^2 .

It is a cyclic number.

It is not a de Polignac number, because 57464381 - 2⁶ = 57464317 is a prime.

It is a super-2 number, since 2×57464381² = 6604310167426322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57464321) 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, 2210156 + ... + 2210181.

It is an arithmetic number, because the mean of its divisors is an integer number (15471183).

Almost surely, 2^57464381 is an apocalyptic number.

It is an amenable number.

57464381 is a deficient number, since it is larger than the sum of its proper divisors (4420351).

57464381 is a wasteful number, since it uses less digits than its factorization.

57464381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420350.

The product of its digits is 80640, while the sum is 38.

The square root of 57464381 is about 7580.5264329069. The cubic root of 57464381 is about 385.8924167950.

The spelling of 57464381 in words is "fifty-seven million, four hundred sixty-four thousand, three hundred eighty-one".