11285491 has 4 divisors (see below), whose sum is σ = 12897712. Its totient is φ = 9673272.

The previous prime is 11285473. The next prime is 11285503. The reversal of 11285491 is 19458211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11285491 - 2⁵ = 11285459 is a prime.

It is a super-2 number, since 2×11285491² = 254724614222162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11285431) 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, 806100 + ... + 806113.

It is an arithmetic number, because the mean of its divisors is an integer number (3224428).

Almost surely, 2^11285491 is an apocalyptic number.

11285491 is a deficient number, since it is larger than the sum of its proper divisors (1612221).

11285491 is an equidigital number, since it uses as much as digits as its factorization.

11285491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612220.

The product of its digits is 2880, while the sum is 31.

The square root of 11285491 is about 3359.3884860194. The cubic root of 11285491 is about 224.3056189193.

The spelling of 11285491 in words is "eleven million, two hundred eighty-five thousand, four hundred ninety-one".