503243089 has 2 divisors, whose sum is σ = 503243090. Its totient is φ = 503243088.

The previous prime is 503243087. The next prime is 503243123. The reversal of 503243089 is 980342305.

It is a happy number.

It is an a-pointer prime, because the next prime (503243123) can be obtained adding 503243089 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503239489 + 3600 = 22433^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 503243089 - 2¹ = 503243087 is a prime.

Together with 503243087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (503243087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251621544 + 251621545.

It is an arithmetic number, because the mean of its divisors is an integer number (251621545).

Almost surely, 2^503243089 is an apocalyptic number.

It is an amenable number.

503243089 is a deficient number, since it is larger than the sum of its proper divisors (1).

503243089 is an equidigital number, since it uses as much as digits as its factorization.

503243089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 503243089 is about 22433.0802387902. The cubic root of 503243089 is about 795.4128567724.

The spelling of 503243089 in words is "five hundred three million, two hundred forty-three thousand, eighty-nine".