2257873157 has 4 divisors (see below), whose sum is σ = 2312943276. Its totient is φ = 2202803040.

The previous prime is 2257873117. The next prime is 2257873159. The reversal of 2257873157 is 7513787522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 752898721 + 1504974436 = 27439^2 + 38794^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257873157 - 2²⁶ = 2190764293 is a prime.

It is a super-2 number, since 2×2257873157² = 10195982386202293298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257873159) 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, 27534998 + ... + 27535079.

It is an arithmetic number, because the mean of its divisors is an integer number (578235819).

Almost surely, 2^2257873157 is an apocalyptic number.

It is an amenable number.

2257873157 is a deficient number, since it is larger than the sum of its proper divisors (55070119).

2257873157 is an equidigital number, since it uses as much as digits as its factorization.

2257873157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55070118.

The product of its digits is 823200, while the sum is 47.

The square root of 2257873157 is about 47517.0827913499. The cubic root of 2257873157 is about 1311.8973258701.

The spelling of 2257873157 in words is "two billion, two hundred fifty-seven million, eight hundred seventy-three thousand, one hundred fifty-seven".