11455520 has 24 divisors (see below), whose sum is σ = 27064044. Its totient is φ = 4582144.

The previous prime is 11455513. The next prime is 11455531. The reversal of 11455520 is 2555411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10942864 + 512656 = 3308^2 + 716^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35639 + ... + 35958.

Almost surely, 2^11455520 is an apocalyptic number.

11455520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11455520 is an abundant number, since it is smaller than the sum of its proper divisors (15608524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11455520 is an equidigital number, since it uses as much as digits as its factorization.

11455520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71612 (or 71604 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 11455520 is about 3384.6004195473. The cubic root of 11455520 is about 225.4264832793.

The spelling of 11455520 in words is "eleven million, four hundred fifty-five thousand, five hundred twenty".