51799697 has 4 divisors (see below), whose sum is σ = 54846756. Its totient is φ = 48752640.

The previous prime is 51799679. The next prime is 51799711. The reversal of 51799697 is 79699715.

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 44568976 + 7230721 = 6676^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 51799697 - 2²⁰ = 50751121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51799637) 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, 1523504 + ... + 1523537.

It is an arithmetic number, because the mean of its divisors is an integer number (13711689).

Almost surely, 2^51799697 is an apocalyptic number.

It is an amenable number.

51799697 is a deficient number, since it is larger than the sum of its proper divisors (3047059).

51799697 is a wasteful number, since it uses less digits than its factorization.

51799697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047058.

The product of its digits is 1071630, while the sum is 53.

The square root of 51799697 is about 7197.2006363586. The cubic root of 51799697 is about 372.7712469650.

The spelling of 51799697 in words is "fifty-one million, seven hundred ninety-nine thousand, six hundred ninety-seven".