13555992 has 32 divisors (see below), whose sum is σ = 35060400. Its totient is φ = 4362624.

The previous prime is 13555981. The next prime is 13555999. The reversal of 13555992 is 29955531.

13555992 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13555992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13555999) 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, 9043 + ... + 10434.

Almost surely, 2^13555992 is an apocalyptic number.

13555992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13555992 is an abundant number, since it is smaller than the sum of its proper divisors (21504408).

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

13555992 is a wasteful number, since it uses less digits than its factorization.

13555992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19515 (or 19511 counting only the distinct ones).

The product of its digits is 60750, while the sum is 39.

The square root of 13555992 is about 3681.8462759871. The cubic root of 13555992 is about 238.4388954300.

The spelling of 13555992 in words is "thirteen million, five hundred fifty-five thousand, nine hundred ninety-two".