50021197807573 has 2 divisors, whose sum is σ = 50021197807574. Its totient is φ = 50021197807572.

The previous prime is 50021197807517. The next prime is 50021197807589. The reversal of 50021197807573 is 37570879112005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50015546075889 + 5651731684 = 7072167^2 + 75178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50021197807573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50021197807513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010598903786 + 25010598903787.

It is an arithmetic number, because the mean of its divisors is an integer number (25010598903787).

Almost surely, 2^{50021197807573} is an apocalyptic number.

It is an amenable number.

50021197807573 is a deficient number, since it is larger than the sum of its proper divisors (1).

50021197807573 is an equidigital number, since it uses as much as digits as its factorization.

50021197807573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3704400, while the sum is 55.

The spelling of 50021197807573 in words is "fifty trillion, twenty-one billion, one hundred ninety-seven million, eight hundred seven thousand, five hundred seventy-three".