509141903 has 4 divisors (see below), whose sum is σ = 518748408. Its totient is φ = 499535400.

The previous prime is 509141863. The next prime is 509141957. The reversal of 509141903 is 309141905.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 509141903 - 2⁶ = 509141839 is a prime.

It is a super-2 number, since 2×509141903² = 518450954780922818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 509141903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509146903) 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 in 3 ways as a sum of consecutive naturals, for example, 4803173 + ... + 4803278.

It is an arithmetic number, because the mean of its divisors is an integer number (129687102).

Almost surely, 2^509141903 is an apocalyptic number.

509141903 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

509141903 is a deficient number, since it is larger than the sum of its proper divisors (9606505).

509141903 is an equidigital number, since it uses as much as digits as its factorization.

509141903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9606504.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 509141903 is about 22564.1729961459. The cubic root of 509141903 is about 798.5086293070.

The spelling of 509141903 in words is "five hundred nine million, one hundred forty-one thousand, nine hundred three".