54320405 has 8 divisors (see below), whose sum is σ = 65238072. Its totient is φ = 43420608.

The previous prime is 54320353. The next prime is 54320437. The reversal of 54320405 is 50402345.

It can be written as a sum of positive squares in 4 ways, for example, as 34597924 + 19722481 = 5882^2 + 4441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54320405 - 2⁶ = 54320341 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 7 ways as a sum of consecutive naturals, for example, 3527 + ... + 11003.

It is an arithmetic number, because the mean of its divisors is an integer number (8154759).

Almost surely, 2^54320405 is an apocalyptic number.

It is an amenable number.

54320405 is a deficient number, since it is larger than the sum of its proper divisors (10917667).

54320405 is a wasteful number, since it uses less digits than its factorization.

54320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8935.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 54320405 is about 7370.2377844952. The cubic root of 54320405 is about 378.7224061051.

The spelling of 54320405 in words is "fifty-four million, three hundred twenty thousand, four hundred five".