11137657 has 4 divisors (see below), whose sum is σ = 11278720. Its totient is φ = 10996596.

The previous prime is 11137631. The next prime is 11137661. The reversal of 11137657 is 75673111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75673111 = 401 ⋅188711.

It is a cyclic number.

It is not a de Polignac number, because 11137657 - 2¹⁵ = 11104889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11137697) 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, 70413 + ... + 70570.

It is an arithmetic number, because the mean of its divisors is an integer number (2819680).

Almost surely, 2^11137657 is an apocalyptic number.

It is an amenable number.

11137657 is a deficient number, since it is larger than the sum of its proper divisors (141063).

11137657 is an equidigital number, since it uses as much as digits as its factorization.

11137657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141062.

The product of its digits is 4410, while the sum is 31.

The square root of 11137657 is about 3337.3128411942. The cubic root of 11137657 is about 223.3218822871.

The spelling of 11137657 in words is "eleven million, one hundred thirty-seven thousand, six hundred fifty-seven".