503200161 has 16 divisors (see below), whose sum is σ = 784718400. Its totient is φ = 317810304.

The previous prime is 503200157. The next prime is 503200171. The reversal of 503200161 is 161002305.

503200161 is a `hidden beast` number, since 503 + 2 + 0 + 0 + 161 = 666.

It is not a de Polignac number, because 503200161 - 2² = 503200157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503200151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489936 + ... + 490961.

It is an arithmetic number, because the mean of its divisors is an integer number (49044900).

Almost surely, 2^503200161 is an apocalyptic number.

It is an amenable number.

503200161 is a deficient number, since it is larger than the sum of its proper divisors (281518239).

503200161 is a wasteful number, since it uses less digits than its factorization.

503200161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980925 (or 980919 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 503200161 is about 22432.1234170999. The cubic root of 503200161 is about 795.3902391714.

Adding to 503200161 its reverse (161002305), we get a palindrome (664202466).

The spelling of 503200161 in words is "five hundred three million, two hundred thousand, one hundred sixty-one".