2457257317 has 8 divisors (see below), whose sum is σ = 2546234240. Its totient is φ = 2369727360.

The previous prime is 2457257303. The next prime is 2457257321. The reversal of 2457257317 is 7137527542.

2457257317 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 a cyclic number.

It is not a de Polignac number, because 2457257317 - 2⁷ = 2457257189 is a prime.

It is a super-2 number, since 2×2457257317² = 12076227043900076978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2457257347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358284 + ... + 365077.

It is an arithmetic number, because the mean of its divisors is an integer number (318279280).

Almost surely, 2^2457257317 is an apocalyptic number.

It is an amenable number.

2457257317 is a deficient number, since it is larger than the sum of its proper divisors (88976923).

2457257317 is an equidigital number, since it uses as much as digits as its factorization.

2457257317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723483.

The product of its digits is 411600, while the sum is 43.

The square root of 2457257317 is about 49570.7304465044. The cubic root of 2457257317 is about 1349.4295380351.

The spelling of 2457257317 in words is "two billion, four hundred fifty-seven million, two hundred fifty-seven thousand, three hundred seventeen".