13554990 has 24 divisors (see below), whose sum is σ = 35243208. Its totient is φ = 3614640.

The previous prime is 13554949. The next prime is 13554997. The reversal of 13554990 is 9945531.

13554990 is a `hidden beast` number, since 13 + 554 + 9 + 90 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13554997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75216 + ... + 75395.

It is an arithmetic number, because the mean of its divisors is an integer number (1468467).

Almost surely, 2^13554990 is an apocalyptic number.

13554990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13554990 is an abundant number, since it is smaller than the sum of its proper divisors (21688218).

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

13554990 is a wasteful number, since it uses less digits than its factorization.

13554990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150624 (or 150621 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 13554990 is about 3681.7102004367. The cubic root of 13554990 is about 238.4330204964.

The spelling of 13554990 in words is "thirteen million, five hundred fifty-four thousand, nine hundred ninety".