57091769 has 4 divisors (see below), whose sum is σ = 65247744. Its totient is φ = 48935796.

The previous prime is 57091733. The next prime is 57091787. The reversal of 57091769 is 96719075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57091769 - 2¹² = 57087673 is a prime.

It is a super-3 number, since 3×57091769³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57091709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077977 + ... + 4077990.

It is an arithmetic number, because the mean of its divisors is an integer number (16311936).

Almost surely, 2^57091769 is an apocalyptic number.

It is an amenable number.

57091769 is a deficient number, since it is larger than the sum of its proper divisors (8155975).

57091769 is an equidigital number, since it uses as much as digits as its factorization.

57091769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155974.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 57091769 is about 7555.9095415443. The cubic root of 57091769 is about 385.0565363648.

The spelling of 57091769 in words is "fifty-seven million, ninety-one thousand, seven hundred sixty-nine".