11562491 has 4 divisors (see below), whose sum is σ = 12065232. Its totient is φ = 11059752.

The previous prime is 11562487. The next prime is 11562493. The reversal of 11562491 is 19426511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19426511 = 13 ⋅1494347.

It is a cyclic number.

It is not a de Polignac number, because 11562491 - 2² = 11562487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11562493) 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, 251336 + ... + 251381.

It is an arithmetic number, because the mean of its divisors is an integer number (3016308).

Almost surely, 2^11562491 is an apocalyptic number.

11562491 is a deficient number, since it is larger than the sum of its proper divisors (502741).

11562491 is an equidigital number, since it uses as much as digits as its factorization.

11562491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502740.

The product of its digits is 2160, while the sum is 29.

The square root of 11562491 is about 3400.3663037973. The cubic root of 11562491 is about 226.1259837422.

The spelling of 11562491 in words is "eleven million, five hundred sixty-two thousand, four hundred ninety-one".