56621210501071 has 2 divisors, whose sum is σ = 56621210501072. Its totient is φ = 56621210501070.

The previous prime is 56621210501047. The next prime is 56621210501083. The reversal of 56621210501071 is 17010501212665.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56621210501071 is a prime.

It is a super-2 number, since 2×56621210501071² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56621210501071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56621210501021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28310605250535 + 28310605250536.

It is an arithmetic number, because the mean of its divisors is an integer number (28310605250536).

Almost surely, 2^{56621210501071} is an apocalyptic number.

56621210501071 is a deficient number, since it is larger than the sum of its proper divisors (1).

56621210501071 is an equidigital number, since it uses as much as digits as its factorization.

56621210501071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 56621210501071 in words is "fifty-six trillion, six hundred twenty-one billion, two hundred ten million, five hundred one thousand, seventy-one".