54431994 has 24 divisors (see below), whose sum is σ = 115648128. Its totient is φ = 17076160.

The previous prime is 54431963. The next prime is 54432013. The reversal of 54431994 is 49913445.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13962 + ... + 17429.

It is an arithmetic number, because the mean of its divisors is an integer number (4818672).

Almost surely, 2^54431994 is an apocalyptic number.

54431994 is an abundant number, since it is smaller than the sum of its proper divisors (61216134).

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

54431994 is a wasteful number, since it uses less digits than its factorization.

54431994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31430 (or 31413 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 54431994 is about 7377.8041448659. The cubic root of 54431994 is about 378.9815619344.

The spelling of 54431994 in words is "fifty-four million, four hundred thirty-one thousand, nine hundred ninety-four".