200198451 has 4 divisors (see below), whose sum is σ = 266931272. Its totient is φ = 133465632.

The previous prime is 200198429. The next prime is 200198519. The reversal of 200198451 is 154891002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 200198451 - 2⁵ = 200198419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200198351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33366406 + ... + 33366411.

It is an arithmetic number, because the mean of its divisors is an integer number (66732818).

Almost surely, 2^200198451 is an apocalyptic number.

200198451 is a deficient number, since it is larger than the sum of its proper divisors (66732821).

200198451 is an equidigital number, since it uses as much as digits as its factorization.

200198451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66732820.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 200198451 is about 14149.1501864953. The cubic root of 200198451 is about 584.9969084503.

The spelling of 200198451 in words is "two hundred million, one hundred ninety-eight thousand, four hundred fifty-one".