51707066 has 4 divisors (see below), whose sum is σ = 77560602. Its totient is φ = 25853532.

The previous prime is 51707063. The next prime is 51707107. The reversal of 51707066 is 66070715.

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., 41280625 + 10426441 = 6425^2 + 3229^2 .

It is not an unprimeable number, because it can be changed into a prime (51707063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12926765 + ... + 12926768.

Almost surely, 2^51707066 is an apocalyptic number.

51707066 is a deficient number, since it is larger than the sum of its proper divisors (25853536).

51707066 is a wasteful number, since it uses less digits than its factorization.

51707066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25853535.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 51707066 is about 7190.7625464898. The cubic root of 51707066 is about 372.5489111937.

It can be divided in two parts, 5 and 1707066, that added together give a palindrome (1707071).

The spelling of 51707066 in words is "fifty-one million, seven hundred seven thousand, sixty-six".