56619473 has 2 divisors, whose sum is σ = 56619474. Its totient is φ = 56619472.

The previous prime is 56619463. The next prime is 56619499. The reversal of 56619473 is 37491665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29506624 + 27112849 = 5432^2 + 5207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56619473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56619473.

It is not a weakly prime, because it can be changed into another prime (56619463) 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, 28309736 + 28309737.

It is an arithmetic number, because the mean of its divisors is an integer number (28309737).

Almost surely, 2^56619473 is an apocalyptic number.

It is an amenable number.

56619473 is a deficient number, since it is larger than the sum of its proper divisors (1).

56619473 is an equidigital number, since it uses as much as digits as its factorization.

56619473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 56619473 is about 7524.5912181327. The cubic root of 56619473 is about 383.9917917263.

The spelling of 56619473 in words is "fifty-six million, six hundred nineteen thousand, four hundred seventy-three".