240897253 has 2 divisors, whose sum is σ = 240897254. Its totient is φ = 240897252.

The previous prime is 240897247. The next prime is 240897277. The reversal of 240897253 is 352798042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239413729 + 1483524 = 15473^2 + 1218^2 .

It is a cyclic number.

It is not a de Polignac number, because 240897253 - 2²¹ = 238800101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240897203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120448626 + 120448627.

It is an arithmetic number, because the mean of its divisors is an integer number (120448627).

Almost surely, 2^240897253 is an apocalyptic number.

It is an amenable number.

240897253 is a deficient number, since it is larger than the sum of its proper divisors (1).

240897253 is an equidigital number, since it uses as much as digits as its factorization.

240897253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 240897253 is about 15520.8650854261. The cubic root of 240897253 is about 622.2199752340.

The spelling of 240897253 in words is "two hundred forty million, eight hundred ninety-seven thousand, two hundred fifty-three".