998141251 has 2 divisors, whose sum is σ = 998141252. Its totient is φ = 998141250.

The previous prime is 998141233. The next prime is 998141273. The reversal of 998141251 is 152141899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998141251 - 2⁵ = 998141219 is a prime.

It is not a weakly prime, because it can be changed into another prime (998142251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499070625 + 499070626.

It is an arithmetic number, because the mean of its divisors is an integer number (499070626).

Almost surely, 2^998141251 is an apocalyptic number.

998141251 is a deficient number, since it is larger than the sum of its proper divisors (1).

998141251 is an equidigital number, since it uses as much as digits as its factorization.

998141251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 40.

The square root of 998141251 is about 31593.3735299034. The cubic root of 998141251 is about 999.3800327200.

The spelling of 998141251 in words is "nine hundred ninety-eight million, one hundred forty-one thousand, two hundred fifty-one".