54391980 has 48 divisors (see below), whose sum is σ = 157215744. Its totient is φ = 14036160.

The previous prime is 54391943. The next prime is 54392029. The reversal of 54391980 is 8919345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12762 + ... + 16481.

It is an arithmetic number, because the mean of its divisors is an integer number (3275328).

Almost surely, 2^54391980 is an apocalyptic number.

It is an amenable number.

54391980 is an abundant number, since it is smaller than the sum of its proper divisors (102823764).

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

54391980 is a wasteful number, since it uses less digits than its factorization.

54391980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29286 (or 29284 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 54391980 is about 7375.0918638346. The cubic root of 54391980 is about 378.8886736375. Note that the first 3 decimals are identical.

The spelling of 54391980 in words is "fifty-four million, three hundred ninety-one thousand, nine hundred eighty".