503055221 has 2 divisors, whose sum is σ = 503055222. Its totient is φ = 503055220.

The previous prime is 503055209. The next prime is 503055233. The reversal of 503055221 is 122550305.

It is a balanced prime because it is at equal distance from previous prime (503055209) and next prime (503055233).

It can be written as a sum of positive squares in only one way, i.e., 365344996 + 137710225 = 19114^2 + 11735^2 .

It is a cyclic number.

It is not a de Polignac number, because 503055221 - 2¹⁰ = 503054197 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 (503055271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251527610 + 251527611.

It is an arithmetic number, because the mean of its divisors is an integer number (251527611).

Almost surely, 2^503055221 is an apocalyptic number.

It is an amenable number.

503055221 is a deficient number, since it is larger than the sum of its proper divisors (1).

503055221 is an equidigital number, since it uses as much as digits as its factorization.

503055221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 503055221 is about 22428.8925495665. The cubic root of 503055221 is about 795.3138647048.

The spelling of 503055221 in words is "five hundred three million, fifty-five thousand, two hundred twenty-one".