57319369 has 2 divisors, whose sum is σ = 57319370. Its totient is φ = 57319368.

The previous prime is 57319349. The next prime is 57319373. The reversal of 57319369 is 96391375.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34164025 + 23155344 = 5845^2 + 4812^2 .

It is a cyclic number.

It is not a de Polignac number, because 57319369 - 2¹¹ = 57317321 is a prime.

It is a super-2 number, since 2×57319369² = 6571020125116322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57319309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28659684 + 28659685.

It is an arithmetic number, because the mean of its divisors is an integer number (28659685).

Almost surely, 2^57319369 is an apocalyptic number.

It is an amenable number.

57319369 is a deficient number, since it is larger than the sum of its proper divisors (1).

57319369 is an equidigital number, since it uses as much as digits as its factorization.

57319369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 43.

The square root of 57319369 is about 7570.9556199994. The cubic root of 57319369 is about 385.5675421083.

The spelling of 57319369 in words is "fifty-seven million, three hundred nineteen thousand, three hundred sixty-nine".