20098451 has 2 divisors, whose sum is σ = 20098452. Its totient is φ = 20098450.

The previous prime is 20098439. The next prime is 20098453. The reversal of 20098451 is 15489002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20098451 - 2¹⁴ = 20082067 is a prime.

Together with 20098453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20098453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10049225 + 10049226.

It is an arithmetic number, because the mean of its divisors is an integer number (10049226).

Almost surely, 2^20098451 is an apocalyptic number.

20098451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20098451 is an equidigital number, since it uses as much as digits as its factorization.

20098451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20098451 is about 4483.1295988405. The cubic root of 20098451 is about 271.8864280395.

The spelling of 20098451 in words is "twenty million, ninety-eight thousand, four hundred fifty-one".