54388404 has 36 divisors (see below), whose sum is σ = 157122784. Its totient is φ = 15539472.

The previous prime is 54388391. The next prime is 54388417. The reversal of 54388404 is 40488345.

It is an interprime number because it is at equal distance from previous prime (54388391) and next prime (54388417).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 107662 + ... + 108165.

Almost surely, 2^54388404 is an apocalyptic number.

It is an amenable number.

54388404 is an abundant number, since it is smaller than the sum of its proper divisors (102734380).

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

54388404 is a wasteful number, since it uses less digits than its factorization.

54388404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215844 (or 215839 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 54388404 is about 7374.8494221916. The cubic root of 54388404 is about 378.8803701120.

The spelling of 54388404 in words is "fifty-four million, three hundred eighty-eight thousand, four hundred four".