11551040 has 28 divisors (see below), whose sum is σ = 27506676. Its totient is φ = 4620288.

The previous prime is 11551013. The next prime is 11551081. The reversal of 11551040 is 4015511.

It can be written as a sum of positive squares in 2 ways, for example, as 2930944 + 8620096 = 1712^2 + 2936^2 .

It is a congruent number.

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, 17729 + ... + 18368.

Almost surely, 2^11551040 is an apocalyptic number.

11551040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11551040 is an abundant number, since it is smaller than the sum of its proper divisors (15955636).

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

11551040 is an equidigital number, since it uses as much as digits as its factorization.

11551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36114 (or 36104 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 11551040 is about 3398.6820975196. The cubic root of 11551040 is about 226.0513105623.

Adding to 11551040 its reverse (4015511), we get a palindrome (15566551).

The spelling of 11551040 in words is "eleven million, five hundred fifty-one thousand, forty".