54090990 has 80 divisors (see below), whose sum is σ = 148922928. Its totient is φ = 14079744.

The previous prime is 54090989. The next prime is 54091019. The reversal of 54090990 is 9909045.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34054 + ... + 35606.

Almost surely, 2^54090990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54090990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74461464).

54090990 is an abundant number, since it is smaller than the sum of its proper divisors (94831938).

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

54090990 is a wasteful number, since it uses less digits than its factorization.

54090990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 54090990 is about 7354.6577078746. The cubic root of 54090990 is about 378.1884925369.

The spelling of 54090990 in words is "fifty-four million, ninety thousand, nine hundred ninety".