56446405 has 8 divisors (see below), whose sum is σ = 67784472. Its totient is φ = 45124608.

The previous prime is 56446399. The next prime is 56446433. The reversal of 56446405 is 50464465.

It can be written as a sum of positive squares in 4 ways, for example, as 5080516 + 51365889 = 2254^2 + 7167^2 .

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 56446405 - 2⁷ = 56446277 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, 5709 + ... + 12061.

It is an arithmetic number, because the mean of its divisors is an integer number (8473059).

Almost surely, 2^56446405 is an apocalyptic number.

It is an amenable number.

56446405 is a deficient number, since it is larger than the sum of its proper divisors (11338067).

56446405 is a wasteful number, since it uses less digits than its factorization.

56446405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

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

The square root of 56446405 is about 7513.0822569702. The cubic root of 56446405 is about 383.6001448509.

The spelling of 56446405 in words is "fifty-six million, four hundred forty-six thousand, four hundred five".