57438719 has 8 divisors (see below), whose sum is σ = 61961760. Its totient is φ = 52930656.

The previous prime is 57438707. The next prime is 57438737. The reversal of 57438719 is 91783475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57438719 - 2²⁰ = 56390143 is a prime.

It is a super-2 number, since 2×57438719² = 6598412880721922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57438719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57438119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4997 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (7745220).

Almost surely, 2^57438719 is an apocalyptic number.

57438719 is a deficient number, since it is larger than the sum of its proper divisors (4523041).

57438719 is a wasteful number, since it uses less digits than its factorization.

57438719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489.

The product of its digits is 211680, while the sum is 44.

The square root of 57438719 is about 7578.8336173847. The cubic root of 57438719 is about 385.8349652892.

It can be divided in two parts, 574 and 38719, that added together give a palindrome (39293).

The spelling of 57438719 in words is "fifty-seven million, four hundred thirty-eight thousand, seven hundred nineteen".