998753251 has 2 divisors, whose sum is σ = 998753252. Its totient is φ = 998753250.

The previous prime is 998753227. The next prime is 998753269. The reversal of 998753251 is 152357899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998753251 - 2¹⁷ = 998622179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998753195 and 998753204.

It is not a weakly prime, because it can be changed into another prime (998753291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499376625 + 499376626.

It is an arithmetic number, because the mean of its divisors is an integer number (499376626).

Almost surely, 2^998753251 is an apocalyptic number.

998753251 is a deficient number, since it is larger than the sum of its proper divisors (1).

998753251 is an equidigital number, since it uses as much as digits as its factorization.

998753251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The square root of 998753251 is about 31603.0576210594. The cubic root of 998753251 is about 999.5842441710.

The spelling of 998753251 in words is "nine hundred ninety-eight million, seven hundred fifty-three thousand, two hundred fifty-one".