6351222145 has 4 divisors (see below), whose sum is σ = 7621466580. Its totient is φ = 5080977712.

The previous prime is 6351222133. The next prime is 6351222173. The reversal of 6351222145 is 5412221536.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3755115841 + 2596106304 = 61279^2 + 50952^2 .

It is a cyclic number.

It is not a de Polignac number, because 6351222145 - 2⁵ = 6351222113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635122210 + ... + 635122219.

It is an arithmetic number, because the mean of its divisors is an integer number (1905366645).

Almost surely, 2^6351222145 is an apocalyptic number.

It is an amenable number.

6351222145 is a deficient number, since it is larger than the sum of its proper divisors (1270244435).

6351222145 is a wasteful number, since it uses less digits than its factorization.

6351222145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270244434.

The product of its digits is 14400, while the sum is 31.

The square root of 6351222145 is about 79694.5553033581. Note that the first 3 decimals coincide. The cubic root of 6351222145 is about 1851.9066921045.

The spelling of 6351222145 in words is "six billion, three hundred fifty-one million, two hundred twenty-two thousand, one hundred forty-five".