51091274 has 16 divisors (see below), whose sum is σ = 82902120. Its totient is φ = 23474880.

The previous prime is 51091237. The next prime is 51091279. The reversal of 51091274 is 47219015.

51091274 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 4 ways, for example, as 29235649 + 21855625 = 5407^2 + 4675^2 .

It is a super-2 number, since 2×51091274² = 5220636557886152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51091279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1664 + ... + 10244.

Almost surely, 2^51091274 is an apocalyptic number.

51091274 is a deficient number, since it is larger than the sum of its proper divisors (31810846).

51091274 is a wasteful number, since it uses less digits than its factorization.

51091274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8825.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 51091274 is about 7147.8160300892. The cubic root of 51091274 is about 371.0640759417.

The spelling of 51091274 in words is "fifty-one million, ninety-one thousand, two hundred seventy-four".