502861 has 2 divisors, whose sum is σ = 502862. Its totient is φ = 502860.

The previous prime is 502847. The next prime is 502883. The reversal of 502861 is 168205.

It is a happy number.

It is the 290-th star number.

It is an a-pointer prime, because the next prime (502883) can be obtained adding 502861 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281961 + 220900 = 531^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 502861 - 2⁵ = 502829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251430 + 251431.

It is an arithmetic number, because the mean of its divisors is an integer number (251431).

2⁵⁰²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

502861 is a deficient number, since it is larger than the sum of its proper divisors (1).

502861 is an equidigital number, since it uses as much as digits as its factorization.

502861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 502861 is about 709.1269279896. The cubic root of 502861 is about 79.5211499179.

The spelling of 502861 in words is "five hundred two thousand, eight hundred sixty-one".