251248223 has 2 divisors, whose sum is σ = 251248224. Its totient is φ = 251248222.

The previous prime is 251248189. The next prime is 251248243. The reversal of 251248223 is 322842152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251248223 - 2¹⁴ = 251231839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251248243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125624111 + 125624112.

It is an arithmetic number, because the mean of its divisors is an integer number (125624112).

Almost surely, 2^251248223 is an apocalyptic number.

251248223 is a deficient number, since it is larger than the sum of its proper divisors (1).

251248223 is an equidigital number, since it uses as much as digits as its factorization.

251248223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

The square root of 251248223 is about 15850.8114303338. The cubic root of 251248223 is about 631.0072264747.

The spelling of 251248223 in words is "two hundred fifty-one million, two hundred forty-eight thousand, two hundred twenty-three".