503794661 has 2 divisors, whose sum is σ = 503794662. Its totient is φ = 503794660.

The previous prime is 503794639. The next prime is 503794667. The reversal of 503794661 is 166497305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500372161 + 3422500 = 22369^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 503794661 - 2⁶ = 503794597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503794667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251897330 + 251897331.

It is an arithmetic number, because the mean of its divisors is an integer number (251897331).

Almost surely, 2^503794661 is an apocalyptic number.

It is an amenable number.

503794661 is a deficient number, since it is larger than the sum of its proper divisors (1).

503794661 is an equidigital number, since it uses as much as digits as its factorization.

503794661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 503794661 is about 22445.3705917278. The cubic root of 503794661 is about 795.7033507573.

The spelling of 503794661 in words is "five hundred three million, seven hundred ninety-four thousand, six hundred sixty-one".