51959767 has 4 divisors (see below), whose sum is σ = 51974200. Its totient is φ = 51945336.

The previous prime is 51959749. The next prime is 51959779. The reversal of 51959767 is 76795915.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51959767 - 2¹⁵ = 51926999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51959767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51959797) 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, 3109 + ... + 10657.

It is an arithmetic number, because the mean of its divisors is an integer number (12993550).

Almost surely, 2^51959767 is an apocalyptic number.

51959767 is a deficient number, since it is larger than the sum of its proper divisors (14433).

51959767 is an equidigital number, since it uses as much as digits as its factorization.

51959767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14432.

The product of its digits is 595350, while the sum is 49.

The square root of 51959767 is about 7208.3123544974. The cubic root of 51959767 is about 373.1548279462.

The spelling of 51959767 in words is "fifty-one million, nine hundred fifty-nine thousand, seven hundred sixty-seven".