503500873 has 2 divisors, whose sum is σ = 503500874. Its totient is φ = 503500872.

The previous prime is 503500861. The next prime is 503500897. The reversal of 503500873 is 378005305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368755209 + 134745664 = 19203^2 + 11608^2 .

It is a cyclic number.

It is not a de Polignac number, because 503500873 - 2¹³ = 503492681 is a prime.

It is a super-2 number, since 2×503500873² = 507026258223524258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (503503873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251750436 + 251750437.

It is an arithmetic number, because the mean of its divisors is an integer number (251750437).

Almost surely, 2^503500873 is an apocalyptic number.

It is an amenable number.

503500873 is a deficient number, since it is larger than the sum of its proper divisors (1).

503500873 is an equidigital number, since it uses as much as digits as its factorization.

503500873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 503500873 is about 22438.8251252154. The cubic root of 503500873 is about 795.5486491368.

The spelling of 503500873 in words is "five hundred three million, five hundred thousand, eight hundred seventy-three".