51274066 has 4 divisors (see below), whose sum is σ = 76911102. Its totient is φ = 25637032.

The previous prime is 51274063. The next prime is 51274073. The reversal of 51274066 is 66047215.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 35105625 + 16168441 = 5925^2 + 4021^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51274063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12818515 + ... + 12818518.

Almost surely, 2^51274066 is an apocalyptic number.

51274066 is a deficient number, since it is larger than the sum of its proper divisors (25637036).

51274066 is a wasteful number, since it uses less digits than its factorization.

51274066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25637035.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 51274066 is about 7160.5911767116. The cubic root of 51274066 is about 371.5060745426.

The spelling of 51274066 in words is "fifty-one million, two hundred seventy-four thousand, sixty-six".