56405183 has 2 divisors, whose sum is σ = 56405184. Its totient is φ = 56405182.

The previous prime is 56405171. The next prime is 56405189. The reversal of 56405183 is 38150465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56405183 - 2⁶ = 56405119 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56405189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28202591 + 28202592.

It is an arithmetic number, because the mean of its divisors is an integer number (28202592).

Almost surely, 2^56405183 is an apocalyptic number.

56405183 is a deficient number, since it is larger than the sum of its proper divisors (1).

56405183 is an equidigital number, since it uses as much as digits as its factorization.

56405183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 56405183 is about 7510.3384078216. The cubic root of 56405183 is about 383.5067428825.

The spelling of 56405183 in words is "fifty-six million, four hundred five thousand, one hundred eighty-three".