56505406 has 4 divisors (see below), whose sum is σ = 84758112. Its totient is φ = 28252702.

The previous prime is 56505391. The next prime is 56505413. The reversal of 56505406 is 60450565.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126350 + ... + 14126353.

It is an arithmetic number, because the mean of its divisors is an integer number (21189528).

Almost surely, 2^56505406 is an apocalyptic number.

56505406 is a deficient number, since it is larger than the sum of its proper divisors (28252706).

56505406 is a wasteful number, since it uses less digits than its factorization.

56505406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28252705.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 56505406 is about 7517.0077823560. The cubic root of 56505406 is about 383.7337518895.

The spelling of 56505406 in words is "fifty-six million, five hundred five thousand, four hundred six".