11555257 has 8 divisors (see below), whose sum is σ = 13982976. Its totient is φ = 9321792.

The previous prime is 11555213. The next prime is 11555263. The reversal of 11555257 is 75255511.

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 11555257 - 2⁷ = 11555129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11555207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48433 + ... + 48670.

It is an arithmetic number, because the mean of its divisors is an integer number (1747872).

Almost surely, 2^11555257 is an apocalyptic number.

11555257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11555257 is a deficient number, since it is larger than the sum of its proper divisors (2427719).

11555257 is an equidigital number, since it uses as much as digits as its factorization.

11555257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97127.

The product of its digits is 8750, while the sum is 31.

The square root of 11555257 is about 3399.3024284403. The cubic root of 11555257 is about 226.0788158027.

The spelling of 11555257 in words is "eleven million, five hundred fifty-five thousand, two hundred fifty-seven".