298538531 has 2 divisors, whose sum is σ = 298538532. Its totient is φ = 298538530.

The previous prime is 298538497. The next prime is 298538563. The reversal of 298538531 is 135835892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 298538531 - 2¹⁰ = 298537507 is a prime.

It is a super-2 number, since 2×298538531² = 178250508983275922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (298538231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149269265 + 149269266.

It is an arithmetic number, because the mean of its divisors is an integer number (149269266).

Almost surely, 2^298538531 is an apocalyptic number.

298538531 is a deficient number, since it is larger than the sum of its proper divisors (1).

298538531 is an equidigital number, since it uses as much as digits as its factorization.

298538531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The square root of 298538531 is about 17278.2675925568. The cubic root of 298538531 is about 668.3441183880.

The spelling of 298538531 in words is "two hundred ninety-eight million, five hundred thirty-eight thousand, five hundred thirty-one".