54435440 has 20 divisors (see below), whose sum is σ = 126562584. Its totient is φ = 21774144.

The previous prime is 54435439. The next prime is 54435517. The reversal of 54435440 is 4453445.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340142 + ... + 340301.

Almost surely, 2^54435440 is an apocalyptic number.

It is an amenable number.

54435440 is an abundant number, since it is smaller than the sum of its proper divisors (72127144).

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

54435440 is a wasteful number, since it uses less digits than its factorization.

54435440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680456 (or 680450 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 54435440 is about 7378.0376794917. The cubic root of 54435440 is about 378.9895593321.

Adding to 54435440 its reverse (4453445), we get a palindrome (58888885).

The spelling of 54435440 in words is "fifty-four million, four hundred thirty-five thousand, four hundred forty".