56806444901 has 2 divisors, whose sum is σ = 56806444902. Its totient is φ = 56806444900.

The previous prime is 56806444897. The next prime is 56806444907. The reversal of 56806444901 is 10944460865.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48929882401 + 7876562500 = 221201^2 + 88750^2 .

It is a cyclic number.

It is not a de Polignac number, because 56806444901 - 2² = 56806444897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56806444907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28403222450 + 28403222451.

It is an arithmetic number, because the mean of its divisors is an integer number (28403222451).

Almost surely, 2^56806444901 is an apocalyptic number.

It is an amenable number.

56806444901 is a deficient number, since it is larger than the sum of its proper divisors (1).

56806444901 is an equidigital number, since it uses as much as digits as its factorization.

56806444901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 56806444901 in words is "fifty-six billion, eight hundred six million, four hundred forty-four thousand, nine hundred one".