51767879 has 4 divisors (see below), whose sum is σ = 51782376. Its totient is φ = 51753384.

The previous prime is 51767827. The next prime is 51767927. The reversal of 51767879 is 97876715.

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, and also an emirpimes, since its reverse is a distinct semiprime: 97876715 = 5 ⋅19575343.

It is a cyclic number.

It is not a de Polignac number, because 51767879 - 2⁸ = 51767623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51767819) 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, 2312 + ... + 10434.

It is an arithmetic number, because the mean of its divisors is an integer number (12945594).

Almost surely, 2^51767879 is an apocalyptic number.

51767879 is a deficient number, since it is larger than the sum of its proper divisors (14497).

51767879 is an equidigital number, since it uses as much as digits as its factorization.

51767879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14496.

The product of its digits is 740880, while the sum is 50.

The square root of 51767879 is about 7194.9898540582. The cubic root of 51767879 is about 372.6949063327.

The spelling of 51767879 in words is "fifty-one million, seven hundred sixty-seven thousand, eight hundred seventy-nine".