11257657 has 12 divisors (see below), whose sum is σ = 11916268. Its totient is φ = 10627200.

The previous prime is 11257651. The next prime is 11257663. The reversal of 11257657 is 75675211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11257651) and next prime (11257663).

It can be written as a sum of positive squares in 6 ways, for example, as 4414201 + 6843456 = 2101^2 + 2616^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11257657 is a prime.

It is a super-2 number, since 2×11257657² = 253469682259298, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (14700) is a multiple of the sum of its prime factors (300).

It is not an unprimeable number, because it can be changed into a prime (11257651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62107 + ... + 62287.

Almost surely, 2^11257657 is an apocalyptic number.

It is an amenable number.

11257657 is a deficient number, since it is larger than the sum of its proper divisors (658611).

11257657 is an equidigital number, since it uses as much as digits as its factorization.

11257657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 259 counting only the distinct ones).

The product of its digits is 14700, while the sum is 34.

The square root of 11257657 is about 3355.2432102606. The cubic root of 11257657 is about 224.1210615265.

The spelling of 11257657 in words is "eleven million, two hundred fifty-seven thousand, six hundred fifty-seven".