51796765 has 4 divisors (see below), whose sum is σ = 62156124. Its totient is φ = 41437408.

The previous prime is 51796763. The next prime is 51796777. The reversal of 51796765 is 56769715.

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 2 ways, for example, as 26656569 + 25140196 = 5163^2 + 5014^2 .

It is a cyclic number.

It is not a de Polignac number, because 51796765 - 2¹ = 51796763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51796763) 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, 5179672 + ... + 5179681.

It is an arithmetic number, because the mean of its divisors is an integer number (15539031).

Almost surely, 2^51796765 is an apocalyptic number.

It is an amenable number.

51796765 is a deficient number, since it is larger than the sum of its proper divisors (10359359).

51796765 is a wasteful number, since it uses less digits than its factorization.

51796765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359358.

The product of its digits is 396900, while the sum is 46.

The square root of 51796765 is about 7196.9969431701. The cubic root of 51796765 is about 372.7642135525.

The spelling of 51796765 in words is "fifty-one million, seven hundred ninety-six thousand, seven hundred sixty-five".