504222661 has 2 divisors, whose sum is σ = 504222662. Its totient is φ = 504222660.

The previous prime is 504222581. The next prime is 504222671. The reversal of 504222661 is 166222405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423330625 + 80892036 = 20575^2 + 8994^2 .

It is a cyclic number.

It is not a de Polignac number, because 504222661 - 2¹⁹ = 503698373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504222671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252111330 + 252111331.

It is an arithmetic number, because the mean of its divisors is an integer number (252111331).

Almost surely, 2^504222661 is an apocalyptic number.

It is an amenable number.

504222661 is a deficient number, since it is larger than the sum of its proper divisors (1).

504222661 is an equidigital number, since it uses as much as digits as its factorization.

504222661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 504222661 is about 22454.9028276677. The cubic root of 504222661 is about 795.9286175604.

The spelling of 504222661 in words is "five hundred four million, two hundred twenty-two thousand, six hundred sixty-one".