5451998459 has 2 divisors, whose sum is σ = 5451998460. Its totient is φ = 5451998458.

The previous prime is 5451998353. The next prime is 5451998471. The reversal of 5451998459 is 9548991545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5451998459 - 2⁸ = 5451998203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5451998398 and 5451998407.

It is not a weakly prime, because it can be changed into another prime (5451908459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725999229 + 2725999230.

It is an arithmetic number, because the mean of its divisors is an integer number (2725999230).

Almost surely, 2^5451998459 is an apocalyptic number.

5451998459 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451998459 is an equidigital number, since it uses as much as digits as its factorization.

5451998459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664000, while the sum is 59.

The square root of 5451998459 is about 73837.6493328437. The cubic root of 5451998459 is about 1760.0239385303.

The spelling of 5451998459 in words is "five billion, four hundred fifty-one million, nine hundred ninety-eight thousand, four hundred fifty-nine".