502241561 has 4 divisors (see below), whose sum is σ = 504108900. Its totient is φ = 500374224.

The previous prime is 502241527. The next prime is 502241563. The reversal of 502241561 is 165142205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 293265625 + 208975936 = 17125^2 + 14456^2 .

It is a cyclic number.

It is not a de Polignac number, because 502241561 - 2²² = 498047257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 502241561.

It is not an unprimeable number, because it can be changed into a prime (502241563) 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, 933266 + ... + 933803.

It is an arithmetic number, because the mean of its divisors is an integer number (126027225).

Almost surely, 2^502241561 is an apocalyptic number.

It is an amenable number.

502241561 is a deficient number, since it is larger than the sum of its proper divisors (1867339).

502241561 is a wasteful number, since it uses less digits than its factorization.

502241561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867338.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 502241561 is about 22410.7465515989. The cubic root of 502241561 is about 794.8848433601.

Adding to 502241561 its reverse (165142205), we get a palindrome (667383766).

The spelling of 502241561 in words is "five hundred two million, two hundred forty-one thousand, five hundred sixty-one".