5981934221 has 2 divisors, whose sum is σ = 5981934222. Its totient is φ = 5981934220.

The previous prime is 5981934187. The next prime is 5981934241. The reversal of 5981934221 is 1224391895.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5957678596 + 24255625 = 77186^2 + 4925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5981934221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5981934241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2990967110 + 2990967111.

It is an arithmetic number, because the mean of its divisors is an integer number (2990967111).

Almost surely, 2^5981934221 is an apocalyptic number.

It is an amenable number.

5981934221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5981934221 is an equidigital number, since it uses as much as digits as its factorization.

5981934221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 44.

The square root of 5981934221 is about 77342.9649095508. The cubic root of 5981934221 is about 1815.2949982802.

The spelling of 5981934221 in words is "five billion, nine hundred eighty-one million, nine hundred thirty-four thousand, two hundred twenty-one".