11172605 has 8 divisors (see below), whose sum is σ = 13692672. Its totient is φ = 8747728.

The previous prime is 11172593. The next prime is 11172607. The reversal of 11172605 is 50627111.

11172605 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 a de Polignac number, because none of the positive numbers 2^k-11172605 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 (11172607) 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, 23537 + ... + 24006.

It is an arithmetic number, because the mean of its divisors is an integer number (1711584).

Almost surely, 2^11172605 is an apocalyptic number.

It is an amenable number.

11172605 is a deficient number, since it is larger than the sum of its proper divisors (2520067).

11172605 is an equidigital number, since it uses as much as digits as its factorization.

11172605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47595.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 11172605 is about 3342.5446893048. The cubic root of 11172605 is about 223.5552199371. Note that the first 3 decimals are identical.

Adding to 11172605 its reverse (50627111), we get a palindrome (61799716).

The spelling of 11172605 in words is "eleven million, one hundred seventy-two thousand, six hundred five".