200250991 has 4 divisors (see below), whose sum is σ = 200662672. Its totient is φ = 199839312.

The previous prime is 200250901. The next prime is 200251033. The reversal of 200250991 is 199052002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199052002 = 2 ⋅99526001.

It is a cyclic number.

It is not a de Polignac number, because 200250991 - 2¹³ = 200242799 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 (200250901) 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, 205110 + ... + 206083.

It is an arithmetic number, because the mean of its divisors is an integer number (50165668).

Almost surely, 2^200250991 is an apocalyptic number.

200250991 is a deficient number, since it is larger than the sum of its proper divisors (411681).

200250991 is an equidigital number, since it uses as much as digits as its factorization.

200250991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411680.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 200250991 is about 14151.0067133049. The cubic root of 200250991 is about 585.0480794243.

The spelling of 200250991 in words is "two hundred million, two hundred fifty thousand, nine hundred ninety-one".