51716677 has 4 divisors (see below), whose sum is σ = 51882220. Its totient is φ = 51551136.

The previous prime is 51716663. The next prime is 51716681. The reversal of 51716677 is 77661715.

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 5013121 + 46703556 = 2239^2 + 6834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51716677 is a prime.

It is a super-2 number, since 2×51716677² = 5349229359844658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51716647) 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, 82302 + ... + 82927.

It is an arithmetic number, because the mean of its divisors is an integer number (12970555).

Almost surely, 2^51716677 is an apocalyptic number.

It is an amenable number.

51716677 is a deficient number, since it is larger than the sum of its proper divisors (165543).

51716677 is a wasteful number, since it uses less digits than its factorization.

51716677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165542.

The product of its digits is 61740, while the sum is 40.

The square root of 51716677 is about 7191.4308033937. The cubic root of 51716677 is about 372.5719921512.

The spelling of 51716677 in words is "fifty-one million, seven hundred sixteen thousand, six hundred seventy-seven".