57148369 has 2 divisors, whose sum is σ = 57148370. Its totient is φ = 57148368.

The previous prime is 57148367. The next prime is 57148393. The reversal of 57148369 is 96384175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50594769 + 6553600 = 7113^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 57148369 - 2¹ = 57148367 is a prime.

It is a super-2 number, since 2×57148369² = 6531872158720322, which contains 22 as substring.

Together with 57148367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57148361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28574184 + 28574185.

It is an arithmetic number, because the mean of its divisors is an integer number (28574185).

Almost surely, 2^57148369 is an apocalyptic number.

It is an amenable number.

57148369 is a deficient number, since it is larger than the sum of its proper divisors (1).

57148369 is an equidigital number, since it uses as much as digits as its factorization.

57148369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 57148369 is about 7559.6540264750. The cubic root of 57148369 is about 385.1837409347.

The spelling of 57148369 in words is "fifty-seven million, one hundred forty-eight thousand, three hundred sixty-nine".