503499901 has 2 divisors, whose sum is σ = 503499902. Its totient is φ = 503499900.

The previous prime is 503499833. The next prime is 503499961. The reversal of 503499901 is 109994305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393228900 + 110271001 = 19830^2 + 10501^2 .

It is a cyclic number.

It is not a de Polignac number, because 503499901 - 2⁹ = 503499389 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 (503499961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251749950 + 251749951.

It is an arithmetic number, because the mean of its divisors is an integer number (251749951).

Almost surely, 2^503499901 is an apocalyptic number.

It is an amenable number.

503499901 is a deficient number, since it is larger than the sum of its proper divisors (1).

503499901 is an equidigital number, since it uses as much as digits as its factorization.

503499901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 503499901 is about 22438.8034663170. The cubic root of 503499901 is about 795.5481372053.

The spelling of 503499901 in words is "five hundred three million, four hundred ninety-nine thousand, nine hundred one".