998510057 has 2 divisors, whose sum is σ = 998510058. Its totient is φ = 998510056.

The previous prime is 998510033. The next prime is 998510077. The reversal of 998510057 is 750015899.

It is a happy number.

998510057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956726761 + 41783296 = 30931^2 + 6464^2 .

It is a cyclic number.

It is not a de Polignac number, because 998510057 - 2¹⁴ = 998493673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (998510077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499255028 + 499255029.

It is an arithmetic number, because the mean of its divisors is an integer number (499255029).

Almost surely, 2^998510057 is an apocalyptic number.

It is an amenable number.

998510057 is a deficient number, since it is larger than the sum of its proper divisors (1).

998510057 is an equidigital number, since it uses as much as digits as its factorization.

998510057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 998510057 is about 31599.2097527770. The cubic root of 998510057 is about 999.5031054701.

The spelling of 998510057 in words is "nine hundred ninety-eight million, five hundred ten thousand, fifty-seven".