57139269 has 8 divisors (see below), whose sum is σ = 83111712. Its totient is φ = 34629840.

The previous prime is 57139253. The next prime is 57139279. The reversal of 57139269 is 96293175.

57139269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57139269 - 2⁴ = 57139253 is a prime.

It is a super-2 number, since 2×57139269² = 6529792123708722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57139269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57139219) 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 in 7 ways as a sum of consecutive naturals, for example, 865714 + ... + 865779.

It is an arithmetic number, because the mean of its divisors is an integer number (10388964).

Almost surely, 2^57139269 is an apocalyptic number.

It is an amenable number.

57139269 is a deficient number, since it is larger than the sum of its proper divisors (25972443).

57139269 is a wasteful number, since it uses less digits than its factorization.

57139269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731507.

The product of its digits is 102060, while the sum is 42.

The square root of 57139269 is about 7559.0521231170. The cubic root of 57139269 is about 385.1632949846.

The spelling of 57139269 in words is "fifty-seven million, one hundred thirty-nine thousand, two hundred sixty-nine".