51916737 has 4 divisors (see below), whose sum is σ = 69222320. Its totient is φ = 34611156.

The previous prime is 51916703. The next prime is 51916747. The reversal of 51916737 is 73761915.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51916737 - 2¹¹ = 51914689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51916695 and 51916704.

It is not an unprimeable number, because it can be changed into a prime (51916747) 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, 8652787 + ... + 8652792.

It is an arithmetic number, because the mean of its divisors is an integer number (17305580).

Almost surely, 2^51916737 is an apocalyptic number.

It is an amenable number.

51916737 is a deficient number, since it is larger than the sum of its proper divisors (17305583).

51916737 is a wasteful number, since it uses less digits than its factorization.

51916737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17305582.

The product of its digits is 39690, while the sum is 39.

The square root of 51916737 is about 7205.3269877223. The cubic root of 51916737 is about 373.0517912593.

The spelling of 51916737 in words is "fifty-one million, nine hundred sixteen thousand, seven hundred thirty-seven".