998552123 has 2 divisors, whose sum is σ = 998552124. Its totient is φ = 998552122.

The previous prime is 998552117. The next prime is 998552131. The reversal of 998552123 is 321255899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998552123 - 2¹² = 998548027 is a prime.

It is not a weakly prime, because it can be changed into another prime (998552173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499276061 + 499276062.

It is an arithmetic number, because the mean of its divisors is an integer number (499276062).

Almost surely, 2^998552123 is an apocalyptic number.

998552123 is a deficient number, since it is larger than the sum of its proper divisors (1).

998552123 is an equidigital number, since it uses as much as digits as its factorization.

998552123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 998552123 is about 31599.8753636783. The cubic root of 998552123 is about 999.5171412183.

The spelling of 998552123 in words is "nine hundred ninety-eight million, five hundred fifty-two thousand, one hundred twenty-three".