503221061 has 16 divisors (see below), whose sum is σ = 616809600. Its totient is φ = 400915008.

The previous prime is 503221039. The next prime is 503221123. The reversal of 503221061 is 160122305.

It is a cyclic number.

It is not a de Polignac number, because 503221061 - 2²² = 499026757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503221001) 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, 28646 + ... + 42743.

It is an arithmetic number, because the mean of its divisors is an integer number (38550600).

Almost surely, 2^503221061 is an apocalyptic number.

It is an amenable number.

503221061 is a deficient number, since it is larger than the sum of its proper divisors (113588539).

503221061 is a wasteful number, since it uses less digits than its factorization.

503221061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71468.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 503221061 is about 22432.5892620535. The cubic root of 503221061 is about 795.4012509763.

Adding to 503221061 its reverse (160122305), we get a palindrome (663343366).

The spelling of 503221061 in words is "five hundred three million, two hundred twenty-one thousand, sixty-one".