57198919 has 2 divisors, whose sum is σ = 57198920. Its totient is φ = 57198918.

The previous prime is 57198881. The next prime is 57198959. The reversal of 57198919 is 91989175.

It is a happy number.

57198919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57198919 - 2¹⁷ = 57067847 is a prime.

It is a super-2 number, since 2×57198919² = 6543432669537122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57198959) 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 as a sum of consecutive naturals, namely, 28599459 + 28599460.

It is an arithmetic number, because the mean of its divisors is an integer number (28599460).

Almost surely, 2^57198919 is an apocalyptic number.

57198919 is a deficient number, since it is larger than the sum of its proper divisors (1).

57198919 is an equidigital number, since it uses as much as digits as its factorization.

57198919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 49.

The square root of 57198919 is about 7562.9966944327. The cubic root of 57198919 is about 385.2972775663.

The spelling of 57198919 in words is "fifty-seven million, one hundred ninety-eight thousand, nine hundred nineteen".