54001440 has 72 divisors (see below), whose sum is σ = 184284828. Its totient is φ = 14400000.

The previous prime is 54001399. The next prime is 54001499. The reversal of 54001440 is 4410045.

It can be written as a sum of positive squares in 2 ways, for example, as 53056656 + 944784 = 7284^2 + 972^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 17311 + ... + 20190.

Almost surely, 2^54001440 is an apocalyptic number.

It is an amenable number.

54001440 is an abundant number, since it is smaller than the sum of its proper divisors (130283388).

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

54001440 is a wasteful number, since it uses less digits than its factorization.

54001440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37522 (or 37511 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 54001440 is about 7348.5672072861. The cubic root of 54001440 is about 377.9796747281.

Adding to 54001440 its reverse (4410045), we get a palindrome (58411485).

The spelling of 54001440 in words is "fifty-four million, one thousand, four hundred forty".