503641161 has 12 divisors (see below), whose sum is σ = 728528580. Its totient is φ = 335277600.

The previous prime is 503641157. The next prime is 503641183. The reversal of 503641161 is 161146305.

503641161 is a `hidden beast` number, since 5 + 0 + 3 + 641 + 16 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 368640000 + 135001161 = 19200^2 + 11619^2 .

It is not a de Polignac number, because 503641161 - 2² = 503641157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503641561) 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 11 ways as a sum of consecutive naturals, for example, 33606 + ... + 46223.

It is an arithmetic number, because the mean of its divisors is an integer number (60710715).

Almost surely, 2^503641161 is an apocalyptic number.

It is an amenable number.

503641161 is a deficient number, since it is larger than the sum of its proper divisors (224887419).

503641161 is a wasteful number, since it uses less digits than its factorization.

503641161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80536 (or 80533 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 503641161 is about 22441.9509178681. The cubic root of 503641161 is about 795.6225288929.

Adding to 503641161 its reverse (161146305), we get a palindrome (664787466).

The spelling of 503641161 in words is "five hundred three million, six hundred forty-one thousand, one hundred sixty-one".