51716537 has 8 divisors (see below), whose sum is σ = 54519360. Its totient is φ = 48921840.

The previous prime is 51716531. The next prime is 51716543. The reversal of 51716537 is 73561715.

It is an interprime number because it is at equal distance from previous prime (51716531) and next prime (51716543).

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

It is a cyclic number.

It is not a de Polignac number, because 51716537 - 2²⁴ = 34939321 is a prime.

It is a super-3 number, since 3×51716537³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51716497 and 51716506.

It is not an unprimeable number, because it can be changed into a prime (51716531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14612 + ... + 17802.

It is an arithmetic number, because the mean of its divisors is an integer number (6814920).

Almost surely, 2^51716537 is an apocalyptic number.

It is an amenable number.

51716537 is a deficient number, since it is larger than the sum of its proper divisors (2802823).

51716537 is a wasteful number, since it uses less digits than its factorization.

51716537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063.

The product of its digits is 22050, while the sum is 35.

The square root of 51716537 is about 7191.4210695801. The cubic root of 51716537 is about 372.5716559596.

The spelling of 51716537 in words is "fifty-one million, seven hundred sixteen thousand, five hundred thirty-seven".