651222242 has 12 divisors (see below), whose sum is σ = 1073709798. Its totient is φ = 296010000.

The previous prime is 651222241. The next prime is 651222251. The reversal of 651222242 is 242222156.

651222242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 528034441 + 123187801 = 22979^2 + 11099^2 .

It is not an unprimeable number, because it can be changed into a prime (651222241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1345259 + ... + 1345742.

Almost surely, 2^651222242 is an apocalyptic number.

651222242 is a deficient number, since it is larger than the sum of its proper divisors (422487556).

651222242 is a wasteful number, since it uses less digits than its factorization.

651222242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691025 (or 2691014 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 651222242 is about 25519.0564480743. The cubic root of 651222242 is about 866.7817160547.

Adding to 651222242 its reverse (242222156), we get a palindrome (893444398).

The spelling of 651222242 in words is "six hundred fifty-one million, two hundred twenty-two thousand, two hundred forty-two".