56553959213 has 2 divisors, whose sum is σ = 56553959214. Its totient is φ = 56553959212.

The previous prime is 56553959191. The next prime is 56553959233. The reversal of 56553959213 is 31295935565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55725267844 + 828691369 = 236062^2 + 28787^2 .

It is a cyclic number.

It is not a de Polignac number, because 56553959213 - 2¹⁰ = 56553958189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56553959233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28276979606 + 28276979607.

It is an arithmetic number, because the mean of its divisors is an integer number (28276979607).

Almost surely, 2^56553959213 is an apocalyptic number.

It is an amenable number.

56553959213 is a deficient number, since it is larger than the sum of its proper divisors (1).

56553959213 is an equidigital number, since it uses as much as digits as its factorization.

56553959213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5467500, while the sum is 53.

The spelling of 56553959213 in words is "fifty-six billion, five hundred fifty-three million, nine hundred fifty-nine thousand, two hundred thirteen".