502225661 has 4 divisors (see below), whose sum is σ = 573972192. Its totient is φ = 430479132.

The previous prime is 502225643. The next prime is 502225663. The reversal of 502225661 is 166522205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 502225661 - 2¹⁰ = 502224637 is a prime.

It is a super-2 number, since 2×502225661² = 504461229133773842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502225663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35873255 + ... + 35873268.

It is an arithmetic number, because the mean of its divisors is an integer number (143493048).

Almost surely, 2^502225661 is an apocalyptic number.

It is an amenable number.

502225661 is a deficient number, since it is larger than the sum of its proper divisors (71746531).

502225661 is an equidigital number, since it uses as much as digits as its factorization.

502225661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71746530.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 502225661 is about 22410.3918082661. The cubic root of 502225661 is about 794.8764550974.

Adding to 502225661 its reverse (166522205), we get a palindrome (668747866).

The spelling of 502225661 in words is "five hundred two million, two hundred twenty-five thousand, six hundred sixty-one".