503161243 has 8 divisors (see below), whose sum is σ = 542557008. Its totient is φ = 463864224.

The previous prime is 503161237. The next prime is 503161289. The reversal of 503161243 is 342161305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 503161243 - 2⁹ = 503160731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503161543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13921 + ... + 34642.

It is an arithmetic number, because the mean of its divisors is an integer number (67819626).

Almost surely, 2^503161243 is an apocalyptic number.

503161243 is a deficient number, since it is larger than the sum of its proper divisors (39395765).

503161243 is a wasteful number, since it uses less digits than its factorization.

503161243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49373.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 503161243 is about 22431.2559389794. The cubic root of 503161243 is about 795.3697332192.

The spelling of 503161243 in words is "five hundred three million, one hundred sixty-one thousand, two hundred forty-three".