57219399 has 24 divisors (see below), whose sum is σ = 90061520. Its totient is φ = 35897472.

The previous prime is 57219389. The next prime is 57219401. The reversal of 57219399 is 99391275.

It is a happy number.

57219399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57219399 - 2⁵ = 57219367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57219389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4137 + ... + 11469.

Almost surely, 2^57219399 is an apocalyptic number.

57219399 is a deficient number, since it is larger than the sum of its proper divisors (32842121).

57219399 is a wasteful number, since it uses less digits than its factorization.

57219399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7376 (or 7353 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 57219399 is about 7564.3505339190. The cubic root of 57219399 is about 385.3432571454.

The spelling of 57219399 in words is "fifty-seven million, two hundred nineteen thousand, three hundred ninety-nine".