2451222251 has 4 divisors (see below), whose sum is σ = 2484800712. Its totient is φ = 2417643792.

The previous prime is 2451222239. The next prime is 2451222271. The reversal of 2451222251 is 1522221542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2451222251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2451222251.

It is not an unprimeable number, because it can be changed into a prime (2451222271) 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 in 3 ways as a sum of consecutive naturals, for example, 16789121 + ... + 16789266.

It is an arithmetic number, because the mean of its divisors is an integer number (621200178).

Almost surely, 2^2451222251 is an apocalyptic number.

2451222251 is a deficient number, since it is larger than the sum of its proper divisors (33578461).

2451222251 is an equidigital number, since it uses as much as digits as its factorization.

2451222251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33578460.

The product of its digits is 3200, while the sum is 26.

The square root of 2451222251 is about 49509.8197431580. The cubic root of 2451222251 is about 1348.3238917029.

Adding to 2451222251 its reverse (1522221542), we get a palindrome (3973443793).

The spelling of 2451222251 in words is "two billion, four hundred fifty-one million, two hundred twenty-two thousand, two hundred fifty-one".