51145322 has 8 divisors (see below), whose sum is σ = 78791556. Its totient is φ = 24881472.

The previous prime is 51145309. The next prime is 51145343. The reversal of 51145322 is 22354115.

It can be written as a sum of positive squares in 2 ways, for example, as 50282281 + 863041 = 7091^2 + 929^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345503 + ... + 345650.

Almost surely, 2^51145322 is an apocalyptic number.

51145322 is a deficient number, since it is larger than the sum of its proper divisors (27646234).

51145322 is a wasteful number, since it uses less digits than its factorization.

51145322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691192.

The product of its digits is 1200, while the sum is 23.

The square root of 51145322 is about 7151.5957659812. The cubic root of 51145322 is about 371.1948758598.

Adding to 51145322 its reverse (22354115), we get a palindrome (73499437).

The spelling of 51145322 in words is "fifty-one million, one hundred forty-five thousand, three hundred twenty-two".