54478984 has 24 divisors (see below), whose sum is σ = 118826190. Its totient is φ = 23347968.

The previous prime is 54478967. The next prime is 54478993. The reversal of 54478984 is 48987445.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54434884 + 44100 = 7378^2 + 210^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69097 + ... + 69880.

Almost surely, 2^54478984 is an apocalyptic number.

It is an amenable number.

54478984 is an abundant number, since it is smaller than the sum of its proper divisors (64347206).

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

54478984 is a wasteful number, since it uses less digits than its factorization.

54478984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138997 (or 138986 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 54478984 is about 7380.9880097450. The cubic root of 54478984 is about 379.0905861817.

The spelling of 54478984 in words is "fifty-four million, four hundred seventy-eight thousand, nine hundred eighty-four".