503743161 has 8 divisors (see below), whose sum is σ = 671813440. Its totient is φ = 335750832.

The previous prime is 503743157. The next prime is 503743193. The reversal of 503743161 is 161347305.

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

It is not a de Polignac number, because 503743161 - 2² = 503743157 is a prime.

It is a super-3 number, since 3×503743161³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503743061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221 + ... + 31818.

It is an arithmetic number, because the mean of its divisors is an integer number (83976680).

Almost surely, 2^503743161 is an apocalyptic number.

It is an amenable number.

503743161 is a deficient number, since it is larger than the sum of its proper divisors (168070279).

503743161 is a wasteful number, since it uses less digits than its factorization.

503743161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38975.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 503743161 is about 22444.2233325192. The cubic root of 503743161 is about 795.6762364571.

It can be divided in two parts, 50374 and 3161, that added together give a palindrome (53535).

The spelling of 503743161 in words is "five hundred three million, seven hundred forty-three thousand, one hundred sixty-one".