51396766 has 8 divisors (see below), whose sum is σ = 80447184. Its totient is φ = 24581040.

The previous prime is 51396757. The next prime is 51396769. The reversal of 51396766 is 66769315.

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

It is a super-3 number, since 3×51396766³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51396769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558615 + ... + 558706.

It is an arithmetic number, because the mean of its divisors is an integer number (10055898).

Almost surely, 2^51396766 is an apocalyptic number.

51396766 is a deficient number, since it is larger than the sum of its proper divisors (29050418).

51396766 is a wasteful number, since it uses less digits than its factorization.

51396766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117346.

The product of its digits is 204120, while the sum is 43.

The square root of 51396766 is about 7169.1537854896. The cubic root of 51396766 is about 371.8021792868.

It can be divided in two parts, 513 and 96766, that added together give a palindrome (97279).

The spelling of 51396766 in words is "fifty-one million, three hundred ninety-six thousand, seven hundred sixty-six".