11551992 has 32 divisors (see below), whose sum is σ = 29662800. Its totient is φ = 3746304.

The previous prime is 11551979. The next prime is 11551999. The reversal of 11551992 is 29915511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551999) 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, 5617 + ... + 7392.

Almost surely, 2^11551992 is an apocalyptic number.

11551992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11551992 is an abundant number, since it is smaller than the sum of its proper divisors (18110808).

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

11551992 is a wasteful number, since it uses less digits than its factorization.

11551992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13055 (or 13051 counting only the distinct ones).

The product of its digits is 4050, while the sum is 33.

The square root of 11551992 is about 3398.8221489216. The cubic root of 11551992 is about 226.0575205352.

The spelling of 11551992 in words is "eleven million, five hundred fifty-one thousand, nine hundred ninety-two".