51272066 has 8 divisors (see below), whose sum is σ = 77701260. Its totient is φ = 25371648.

The previous prime is 51272063. The next prime is 51272093. The reversal of 51272066 is 66027215.

It can be written as a sum of positive squares in 2 ways, for example, as 43178041 + 8094025 = 6571^2 + 2845^2 .

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 (51272063) 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 in 3 ways as a sum of consecutive naturals, for example, 131951 + ... + 132338.

Almost surely, 2^51272066 is an apocalyptic number.

51272066 is a deficient number, since it is larger than the sum of its proper divisors (26429194).

51272066 is a wasteful number, since it uses less digits than its factorization.

51272066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264388.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 51272066 is about 7160.4515220760. The cubic root of 51272066 is about 371.5012441487.

The spelling of 51272066 in words is "fifty-one million, two hundred seventy-two thousand, sixty-six".