11572149 has 4 divisors (see below), whose sum is σ = 15429536. Its totient is φ = 7714764.

The previous prime is 11572133. The next prime is 11572163. The reversal of 11572149 is 94127511.

11572149 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11572149 - 2⁴ = 11572133 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 (11572129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928689 + ... + 1928694.

It is an arithmetic number, because the mean of its divisors is an integer number (3857384).

Almost surely, 2^11572149 is an apocalyptic number.

It is an amenable number.

11572149 is a deficient number, since it is larger than the sum of its proper divisors (3857387).

11572149 is an equidigital number, since it uses as much as digits as its factorization.

11572149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857386.

The product of its digits is 2520, while the sum is 30.

The square root of 11572149 is about 3401.7861484814. The cubic root of 11572149 is about 226.1889262623.

The spelling of 11572149 in words is "eleven million, five hundred seventy-two thousand, one hundred forty-nine".