11152391 has 4 divisors (see below), whose sum is σ = 11808432. Its totient is φ = 10496352.

The previous prime is 11152363. The next prime is 11152399. The reversal of 11152391 is 19325111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19325111 = 13 ⋅1486547.

It is a cyclic number.

It is not a de Polignac number, because 11152391 - 2¹⁴ = 11136007 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 (11152399) 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, 327995 + ... + 328028.

It is an arithmetic number, because the mean of its divisors is an integer number (2952108).

Almost surely, 2^11152391 is an apocalyptic number.

11152391 is a deficient number, since it is larger than the sum of its proper divisors (656041).

11152391 is an equidigital number, since it uses as much as digits as its factorization.

11152391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656040.

The product of its digits is 270, while the sum is 23.

The square root of 11152391 is about 3339.5195762265. The cubic root of 11152391 is about 223.4203163566.

The spelling of 11152391 in words is "eleven million, one hundred fifty-two thousand, three hundred ninety-one".