451998803 has 2 divisors, whose sum is σ = 451998804. Its totient is φ = 451998802.

The previous prime is 451998793. The next prime is 451998821. The reversal of 451998803 is 308899154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451998803 - 2¹⁰ = 451997779 is a prime.

It is not a weakly prime, because it can be changed into another prime (451998853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225999401 + 225999402.

It is an arithmetic number, because the mean of its divisors is an integer number (225999402).

Almost surely, 2^451998803 is an apocalyptic number.

451998803 is a deficient number, since it is larger than the sum of its proper divisors (1).

451998803 is an equidigital number, since it uses as much as digits as its factorization.

451998803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 451998803 is about 21260.2634743787. The cubic root of 451998803 is about 767.4423504252.

The spelling of 451998803 in words is "four hundred fifty-one million, nine hundred ninety-eight thousand, eight hundred three".