56471539 has 2 divisors, whose sum is σ = 56471540. Its totient is φ = 56471538.

The previous prime is 56471533. The next prime is 56471573. The reversal of 56471539 is 93517465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56471539 - 2³ = 56471531 is a prime.

It is not a weakly prime, because it can be changed into another prime (56471531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28235769 + 28235770.

It is an arithmetic number, because the mean of its divisors is an integer number (28235770).

Almost surely, 2^56471539 is an apocalyptic number.

56471539 is a deficient number, since it is larger than the sum of its proper divisors (1).

56471539 is an equidigital number, since it uses as much as digits as its factorization.

56471539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 56471539 is about 7514.7547531506. The cubic root of 56471539 is about 383.6570718620.

The spelling of 56471539 in words is "fifty-six million, four hundred seventy-one thousand, five hundred thirty-nine".