502066891 has 2 divisors, whose sum is σ = 502066892. Its totient is φ = 502066890.

The previous prime is 502066871. The next prime is 502066907. The reversal of 502066891 is 198660205.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 502066891 - 2¹⁹ = 501542603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 502066891.

It is not a weakly prime, because it can be changed into another prime (502066871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251033445 + 251033446.

It is an arithmetic number, because the mean of its divisors is an integer number (251033446).

Almost surely, 2^502066891 is an apocalyptic number.

502066891 is a deficient number, since it is larger than the sum of its proper divisors (1).

502066891 is an equidigital number, since it uses as much as digits as its factorization.

502066891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 502066891 is about 22406.8491984036. The cubic root of 502066891 is about 794.7926840984.

The spelling of 502066891 in words is "five hundred two million, sixty-six thousand, eight hundred ninety-one".