251350223 has 4 divisors (see below), whose sum is σ = 251815368. Its totient is φ = 250885080.

The previous prime is 251350217. The next prime is 251350241. The reversal of 251350223 is 322053152.

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

It is a cyclic number.

It is not a de Polignac number, because 251350223 - 2⁶ = 251350159 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 (251350283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231761 + ... + 232842.

It is an arithmetic number, because the mean of its divisors is an integer number (62953842).

Almost surely, 2^251350223 is an apocalyptic number.

251350223 is a deficient number, since it is larger than the sum of its proper divisors (465145).

251350223 is an equidigital number, since it uses as much as digits as its factorization.

251350223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465144.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 251350223 is about 15854.0286047427. The cubic root of 251350223 is about 631.0926055584.

The spelling of 251350223 in words is "two hundred fifty-one million, three hundred fifty thousand, two hundred twenty-three".