54400405 has 16 divisors (see below), whose sum is σ = 68770944. Its totient is φ = 41229760.

The previous prime is 54400373. The next prime is 54400421. The reversal of 54400405 is 50400445.

It is not a de Polignac number, because 54400405 - 2⁵ = 54400373 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 10095 + ... + 14515.

It is an arithmetic number, because the mean of its divisors is an integer number (4298184).

Almost surely, 2^54400405 is an apocalyptic number.

It is an amenable number.

54400405 is a deficient number, since it is larger than the sum of its proper divisors (14370539).

54400405 is a wasteful number, since it uses less digits than its factorization.

54400405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 54400405 is about 7375.6630210443. The cubic root of 54400405 is about 378.9082351751.

The spelling of 54400405 in words is "fifty-four million, four hundred thousand, four hundred five".