56144447 has 2 divisors, whose sum is σ = 56144448. Its totient is φ = 56144446.

The previous prime is 56144399. The next prime is 56144453. The reversal of 56144447 is 74444165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56144447 - 2⁶ = 56144383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56144497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28072223 + 28072224.

It is an arithmetic number, because the mean of its divisors is an integer number (28072224).

Almost surely, 2^56144447 is an apocalyptic number.

56144447 is a deficient number, since it is larger than the sum of its proper divisors (1).

56144447 is an equidigital number, since it uses as much as digits as its factorization.

56144447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 35.

The square root of 56144447 is about 7492.9598290662. The cubic root of 56144447 is about 382.9149031401.

The spelling of 56144447 in words is "fifty-six million, one hundred forty-four thousand, four hundred forty-seven".