11129975 has 6 divisors (see below), whose sum is σ = 13801200. Its totient is φ = 8903960.

The previous prime is 11129969. The next prime is 11129981. The reversal of 11129975 is 57992111.

It is an interprime number because it is at equal distance from previous prime (11129969) and next prime (11129981).

It is not a de Polignac number, because 11129975 - 2¹⁰ = 11128951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222575 + ... + 222624.

It is an arithmetic number, because the mean of its divisors is an integer number (2300200).

Almost surely, 2^11129975 is an apocalyptic number.

11129975 is a deficient number, since it is larger than the sum of its proper divisors (2671225).

11129975 is an equidigital number, since it uses as much as digits as its factorization.

11129975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445209 (or 445204 counting only the distinct ones).

The product of its digits is 5670, while the sum is 35.

The square root of 11129975 is about 3336.1617167038. The cubic root of 11129975 is about 223.2705263847.

The spelling of 11129975 in words is "eleven million, one hundred twenty-nine thousand, nine hundred seventy-five".