54664405 has 4 divisors (see below), whose sum is σ = 65597292. Its totient is φ = 43731520.

The previous prime is 54664397. The next prime is 54664409. The reversal of 54664405 is 50446645.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38229489 + 16434916 = 6183^2 + 4054^2 .

It is not a de Polignac number, because 54664405 - 2³ = 54664397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54664409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5466436 + ... + 5466445.

It is an arithmetic number, because the mean of its divisors is an integer number (16399323).

Almost surely, 2^54664405 is an apocalyptic number.

It is an amenable number.

54664405 is a deficient number, since it is larger than the sum of its proper divisors (10932887).

54664405 is a wasteful number, since it uses less digits than its factorization.

54664405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932886.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 54664405 is about 7393.5380569792. The cubic root of 54664405 is about 379.5201815631.

The spelling of 54664405 in words is "fifty-four million, six hundred sixty-four thousand, four hundred five".