11257213 has 16 divisors (see below), whose sum is σ = 13362624. Its totient is φ = 9365760.

The previous prime is 11257151. The next prime is 11257217. The reversal of 11257213 is 31275211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11257213 - 2²¹ = 9160061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11257217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6106 + ... + 7732.

It is an arithmetic number, because the mean of its divisors is an integer number (835164).

Almost surely, 2^11257213 is an apocalyptic number.

It is an amenable number.

11257213 is a deficient number, since it is larger than the sum of its proper divisors (2105411).

11257213 is a wasteful number, since it uses less digits than its factorization.

11257213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692.

The product of its digits is 420, while the sum is 22.

The square root of 11257213 is about 3355.1770445090. The cubic root of 11257213 is about 224.1181150561.

It can be divided in two parts, 1125 and 7213, that added together give a palindrome (8338).

The spelling of 11257213 in words is "eleven million, two hundred fifty-seven thousand, two hundred thirteen".