57172469 has 2 divisors, whose sum is σ = 57172470. Its totient is φ = 57172468.

The previous prime is 57172459. The next prime is 57172481. The reversal of 57172469 is 96427175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41860900 + 15311569 = 6470^2 + 3913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57172469 is a prime.

It is a super-2 number, since 2×57172469² = 6537382423111922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57172439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28586234 + 28586235.

It is an arithmetic number, because the mean of its divisors is an integer number (28586235).

Almost surely, 2^57172469 is an apocalyptic number.

It is an amenable number.

57172469 is a deficient number, since it is larger than the sum of its proper divisors (1).

57172469 is an equidigital number, since it uses as much as digits as its factorization.

57172469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 57172469 is about 7561.2478467512. The cubic root of 57172469 is about 385.2378785169.

The spelling of 57172469 in words is "fifty-seven million, one hundred seventy-two thousand, four hundred sixty-nine".