11297857 has 4 divisors (see below), whose sum is σ = 11662336. Its totient is φ = 10933380.

The previous prime is 11297821. The next prime is 11297861. The reversal of 11297857 is 75879211.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11297857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11297057) 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, 182193 + ... + 182254.

It is an arithmetic number, because the mean of its divisors is an integer number (2915584).

Almost surely, 2^11297857 is an apocalyptic number.

It is an amenable number.

11297857 is a deficient number, since it is larger than the sum of its proper divisors (364479).

11297857 is an equidigital number, since it uses as much as digits as its factorization.

11297857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364478.

The product of its digits is 35280, while the sum is 40.

The square root of 11297857 is about 3361.2284956545. The cubic root of 11297857 is about 224.3875161326.

It can be divided in two parts, 112 and 97857, that added together give a square (97969 = 313²).

The spelling of 11297857 in words is "eleven million, two hundred ninety-seven thousand, eight hundred fifty-seven".