57263739 has 16 divisors (see below), whose sum is σ = 86553600. Its totient is φ = 33384096.

The previous prime is 57263699. The next prime is 57263741. The reversal of 57263739 is 93736275.

It is a happy number.

It is not a de Polignac number, because 57263739 - 2¹¹ = 57261691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57263739.

It is not an unprimeable number, because it can be changed into a prime (57263749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37899 + ... + 39380.

It is an arithmetic number, because the mean of its divisors is an integer number (5409600).

Almost surely, 2^57263739 is an apocalyptic number.

57263739 is a deficient number, since it is larger than the sum of its proper divisors (29289861).

57263739 is a wasteful number, since it uses less digits than its factorization.

57263739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77314.

The product of its digits is 238140, while the sum is 42.

The square root of 57263739 is about 7567.2808194225. The cubic root of 57263739 is about 385.4427671531.

The spelling of 57263739 in words is "fifty-seven million, two hundred sixty-three thousand, seven hundred thirty-nine".