52170561004621 has 2 divisors, whose sum is σ = 52170561004622. Its totient is φ = 52170561004620.

The previous prime is 52170561004571. The next prime is 52170561004663. The reversal of 52170561004621 is 12640016507125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43931192619721 + 8239368384900 = 6628061^2 + 2870430^2 .

It is a cyclic number.

It is not a de Polignac number, because 52170561004621 - 2⁷ = 52170561004493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52170561004321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26085280502310 + 26085280502311.

It is an arithmetic number, because the mean of its divisors is an integer number (26085280502311).

Almost surely, 2^{52170561004621} is an apocalyptic number.

It is an amenable number.

52170561004621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52170561004621 is an equidigital number, since it uses as much as digits as its factorization.

52170561004621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 52170561004621 in words is "fifty-two trillion, one hundred seventy billion, five hundred sixty-one million, four thousand, six hundred twenty-one".