51692693 has 4 divisors (see below), whose sum is σ = 55669068. Its totient is φ = 47716320.

The previous prime is 51692659. The next prime is 51692701. The reversal of 51692693 is 39629615.

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 21464689 + 30228004 = 4633^2 + 5498^2 .

It is a cyclic number.

It is not a de Polignac number, because 51692693 - 2⁶ = 51692629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51692693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50692693) 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, 1988168 + ... + 1988193.

It is an arithmetic number, because the mean of its divisors is an integer number (13917267).

Almost surely, 2^51692693 is an apocalyptic number.

It is an amenable number.

51692693 is a deficient number, since it is larger than the sum of its proper divisors (3976375).

51692693 is a wasteful number, since it uses less digits than its factorization.

51692693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976374.

The product of its digits is 87480, while the sum is 41.

The square root of 51692693 is about 7189.7630698097. The cubic root of 51692693 is about 372.5143888861.

The spelling of 51692693 in words is "fifty-one million, six hundred ninety-two thousand, six hundred ninety-three".