240993251 has 2 divisors, whose sum is σ = 240993252. Its totient is φ = 240993250.

The previous prime is 240993217. The next prime is 240993253. The reversal of 240993251 is 152399042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240993251 - 2¹⁸ = 240731107 is a prime.

Together with 240993253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240993253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120496625 + 120496626.

It is an arithmetic number, because the mean of its divisors is an integer number (120496626).

Almost surely, 2^240993251 is an apocalyptic number.

240993251 is a deficient number, since it is larger than the sum of its proper divisors (1).

240993251 is an equidigital number, since it uses as much as digits as its factorization.

240993251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 240993251 is about 15523.9573240846. The cubic root of 240993251 is about 622.3026161937.

The spelling of 240993251 in words is "two hundred forty million, nine hundred ninety-three thousand, two hundred fifty-one".