998275451 has 2 divisors, whose sum is σ = 998275452. Its totient is φ = 998275450.

The previous prime is 998275433. The next prime is 998275459. The reversal of 998275451 is 154572899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998275451 - 2¹⁰ = 998274427 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998275451.

It is not a weakly prime, because it can be changed into another prime (998275459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499137725 + 499137726.

It is an arithmetic number, because the mean of its divisors is an integer number (499137726).

Almost surely, 2^998275451 is an apocalyptic number.

998275451 is a deficient number, since it is larger than the sum of its proper divisors (1).

998275451 is an equidigital number, since it uses as much as digits as its factorization.

998275451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 50.

The square root of 998275451 is about 31595.4973216121. The cubic root of 998275451 is about 999.4248195642.

The spelling of 998275451 in words is "nine hundred ninety-eight million, two hundred seventy-five thousand, four hundred fifty-one".