11272257 has 8 divisors (see below), whose sum is σ = 16699680. Its totient is φ = 7514820.

The previous prime is 11272249. The next prime is 11272259. The reversal of 11272257 is 75227211.

It is not a de Polignac number, because 11272257 - 2³ = 11272249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 417491 = 11272257 / (1 + 1 + 2 + 7 + 2 + 2 + 5 + 7).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 11272257.

It is not an unprimeable number, because it can be changed into a prime (11272259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208719 + ... + 208772.

It is an arithmetic number, because the mean of its divisors is an integer number (2087460).

Almost surely, 2^11272257 is an apocalyptic number.

It is an amenable number.

11272257 is a deficient number, since it is larger than the sum of its proper divisors (5427423).

11272257 is an equidigital number, since it uses as much as digits as its factorization.

11272257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417500 (or 417494 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 11272257 is about 3357.4182045137. The cubic root of 11272257 is about 224.2179068400.

Adding to 11272257 its reverse (75227211), we get a palindrome (86499468).

The spelling of 11272257 in words is "eleven million, two hundred seventy-two thousand, two hundred fifty-seven".