51222586 has 8 divisors (see below), whose sum is σ = 77232564. Its totient is φ = 25478400.

The previous prime is 51222583. The next prime is 51222617. The reversal of 51222586 is 68522215.

It can be written as a sum of positive squares in 2 ways, for example, as 51194025 + 28561 = 7155^2 + 169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51222583) 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, 65965 + ... + 66736.

Almost surely, 2^51222586 is an apocalyptic number.

51222586 is a deficient number, since it is larger than the sum of its proper divisors (26009978).

51222586 is a wasteful number, since it uses less digits than its factorization.

51222586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132896.

The product of its digits is 9600, while the sum is 31.

The square root of 51222586 is about 7156.9955987132. The cubic root of 51222586 is about 371.3817001858.

The spelling of 51222586 in words is "fifty-one million, two hundred twenty-two thousand, five hundred eighty-six".