56106621049 has 2 divisors, whose sum is σ = 56106621050. Its totient is φ = 56106621048.

The previous prime is 56106621019. The next prime is 56106621071. The reversal of 56106621049 is 94012660165.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50583158649 + 5523462400 = 224907^2 + 74320^2 .

It is a cyclic number.

It is not a de Polignac number, because 56106621049 - 2⁵ = 56106621017 is a prime.

It is not a weakly prime, because it can be changed into another prime (56106621019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28053310524 + 28053310525.

It is an arithmetic number, because the mean of its divisors is an integer number (28053310525).

Almost surely, 2^56106621049 is an apocalyptic number.

It is an amenable number.

56106621049 is a deficient number, since it is larger than the sum of its proper divisors (1).

56106621049 is an equidigital number, since it uses as much as digits as its factorization.

56106621049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 56106621049 in words is "fifty-six billion, one hundred six million, six hundred twenty-one thousand, forty-nine".