11125191 has 32 divisors (see below), whose sum is σ = 19588608. Its totient is φ = 5437440.

The previous prime is 11125171. The next prime is 11125193. The reversal of 11125191 is 19152111.

11125191 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 not a de Polignac number, because 11125191 - 2⁵ = 11125159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11125193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2511 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (612144).

Almost surely, 2^11125191 is an apocalyptic number.

11125191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11125191 is a deficient number, since it is larger than the sum of its proper divisors (8463417).

11125191 is a wasteful number, since it uses less digits than its factorization.

11125191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871.

The product of its digits is 90, while the sum is 21.

The square root of 11125191 is about 3335.4446480192. Note that the first 3 decimals coincide. The cubic root of 11125191 is about 223.2385323244.

The spelling of 11125191 in words is "eleven million, one hundred twenty-five thousand, one hundred ninety-one".