11172551 has 8 divisors (see below), whose sum is σ = 12665520. Its totient is φ = 9770112.

The previous prime is 11172529. The next prime is 11172593. The reversal of 11172551 is 15527111.

11172551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11172551 - 2²² = 6978247 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 (11172151) 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, 22370 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (1583190).

Almost surely, 2^11172551 is an apocalyptic number.

11172551 is a deficient number, since it is larger than the sum of its proper divisors (1492969).

11172551 is a wasteful number, since it uses less digits than its factorization.

11172551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45265.

The product of its digits is 350, while the sum is 23.

The square root of 11172551 is about 3342.5366116170. The cubic root of 11172551 is about 223.5548597704.

Adding to 11172551 its reverse (15527111), we get a palindrome (26699662).

The spelling of 11172551 in words is "eleven million, one hundred seventy-two thousand, five hundred fifty-one".