11520554 has 4 divisors (see below), whose sum is σ = 17280834. Its totient is φ = 5760276.

The previous prime is 11520473. The next prime is 11520559. The reversal of 11520554 is 45502511.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 10923025 + 597529 = 3305^2 + 773^2 .

It is a super-4 number, since 4×11520554⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (11520559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2880137 + ... + 2880140.

Almost surely, 2^11520554 is an apocalyptic number.

11520554 is a deficient number, since it is larger than the sum of its proper divisors (5760280).

11520554 is an equidigital number, since it uses as much as digits as its factorization.

11520554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760279.

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

The square root of 11520554 is about 3394.1941606219. The cubic root of 11520554 is about 225.8522672481.

The spelling of 11520554 in words is "eleven million, five hundred twenty thousand, five hundred fifty-four".