11555772 has 24 divisors (see below), whose sum is σ = 27172992. Its totient is φ = 3822000.

The previous prime is 11555771. The next prime is 11555783. The reversal of 11555772 is 27755511.

11555772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104 + ... + 5247.

It is an arithmetic number, because the mean of its divisors is an integer number (1132208).

Almost surely, 2^11555772 is an apocalyptic number.

11555772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11555772 is an abundant number, since it is smaller than the sum of its proper divisors (15617220).

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

11555772 is a wasteful number, since it uses less digits than its factorization.

11555772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489 (or 7487 counting only the distinct ones).

The product of its digits is 12250, while the sum is 33.

The square root of 11555772 is about 3399.3781784320. The cubic root of 11555772 is about 226.0821744143.

The spelling of 11555772 in words is "eleven million, five hundred fifty-five thousand, seven hundred seventy-two".