11172557 has 16 divisors (see below), whose sum is σ = 12691392. Its totient is φ = 9745920.

The previous prime is 11172529. The next prime is 11172593. The reversal of 11172557 is 75527111.

11172557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11172557 - 2¹² = 11168461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172527) 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, 39338 + ... + 39620.

It is an arithmetic number, because the mean of its divisors is an integer number (793212).

Almost surely, 2^11172557 is an apocalyptic number.

It is an amenable number.

11172557 is a deficient number, since it is larger than the sum of its proper divisors (1518835).

11172557 is a wasteful number, since it uses less digits than its factorization.

11172557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428.

The product of its digits is 2450, while the sum is 29.

The square root of 11172557 is about 3342.5375091388. The cubic root of 11172557 is about 223.5548997890.

Adding to 11172557 its reverse (75527111), we get a palindrome (86699668).

The spelling of 11172557 in words is "eleven million, one hundred seventy-two thousand, five hundred fifty-seven".