54057990 has 64 divisors (see below), whose sum is σ = 151455744. Its totient is φ = 12091008.

The previous prime is 54057979. The next prime is 54058013. The reversal of 54057990 is 9975045.

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 31 ways as a sum of consecutive naturals, for example, 7132 + ... + 12608.

It is an arithmetic number, because the mean of its divisors is an integer number (2366496).

Almost surely, 2^54057990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54057990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75727872).

54057990 is an abundant number, since it is smaller than the sum of its proper divisors (97397754).

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

54057990 is a wasteful number, since it uses less digits than its factorization.

54057990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 54057990 is about 7352.4138893291. The cubic root of 54057990 is about 378.1115680860. Note that the first 3 decimals are identical.

The spelling of 54057990 in words is "fifty-four million, fifty-seven thousand, nine hundred ninety".