200143551 has 4 divisors (see below), whose sum is σ = 266858072. Its totient is φ = 133429032.

The previous prime is 200143547. The next prime is 200143553. The reversal of 200143551 is 155341002.

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

It is not a de Polignac number, because 200143551 - 2² = 200143547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200143553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33357256 + ... + 33357261.

It is an arithmetic number, because the mean of its divisors is an integer number (66714518).

Almost surely, 2^200143551 is an apocalyptic number.

200143551 is a deficient number, since it is larger than the sum of its proper divisors (66714521).

200143551 is an equidigital number, since it uses as much as digits as its factorization.

200143551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66714520.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 200143551 is about 14147.2100076305. The cubic root of 200143551 is about 584.9434294044.

Adding to 200143551 its reverse (155341002), we get a palindrome (355484553).

The spelling of 200143551 in words is "two hundred million, one hundred forty-three thousand, five hundred fifty-one".