240452240251 has 4 divisors (see below), whose sum is σ = 240456440952. Its totient is φ = 240448039552.

The previous prime is 240452240239. The next prime is 240452240261. The reversal of 240452240251 is 152042254042.

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 240452240251 - 2⁵ = 240452240219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240452240201) 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, 2013286 + ... + 2129371.

It is an arithmetic number, because the mean of its divisors is an integer number (60114110238).

Almost surely, 2^240452240251 is an apocalyptic number.

240452240251 is a deficient number, since it is larger than the sum of its proper divisors (4200701).

240452240251 is an equidigital number, since it uses as much as digits as its factorization.

240452240251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200700.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 240452240251 its reverse (152042254042), we get a palindrome (392494494293).

The spelling of 240452240251 in words is "two hundred forty billion, four hundred fifty-two million, two hundred forty thousand, two hundred fifty-one".