57109719 has 16 divisors (see below), whose sum is σ = 80436224. Its totient is φ = 35985600.

The previous prime is 57109711. The next prime is 57109721. The reversal of 57109719 is 91790175.

It is not a de Polignac number, because 57109719 - 2³ = 57109711 is a prime.

It is a super-2 number, since 2×57109719² = 6523040008517922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57109711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142 + ... + 11139.

It is an arithmetic number, because the mean of its divisors is an integer number (5027264).

Almost surely, 2^57109719 is an apocalyptic number.

57109719 is a deficient number, since it is larger than the sum of its proper divisors (23326505).

57109719 is a wasteful number, since it uses less digits than its factorization.

57109719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14358.

The product of its (nonzero) digits is 19845, while the sum is 39.

The square root of 57109719 is about 7557.0972601919. The cubic root of 57109719 is about 385.0968868433.

The spelling of 57109719 in words is "fifty-seven million, one hundred nine thousand, seven hundred nineteen".