502198397 has 2 divisors, whose sum is σ = 502198398. Its totient is φ = 502198396.

The previous prime is 502198379. The next prime is 502198427. The reversal of 502198397 is 793891205.

Together with previous prime (502198379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491996761 + 10201636 = 22181^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 502198397 - 2⁸ = 502198141 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 (502198097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251099198 + 251099199.

It is an arithmetic number, because the mean of its divisors is an integer number (251099199).

Almost surely, 2^502198397 is an apocalyptic number.

It is an amenable number.

502198397 is a deficient number, since it is larger than the sum of its proper divisors (1).

502198397 is an equidigital number, since it uses as much as digits as its factorization.

502198397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 502198397 is about 22409.7835107794. The cubic root of 502198397 is about 794.8620711889.

The spelling of 502198397 in words is "five hundred two million, one hundred ninety-eight thousand, three hundred ninety-seven".