51313079 has 4 divisors (see below), whose sum is σ = 51351984. Its totient is φ = 51274176.

The previous prime is 51313033. The next prime is 51313081. The reversal of 51313079 is 97031315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51313079 - 2²⁰ = 50264503 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 (51316079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17402 + ... + 20135.

It is an arithmetic number, because the mean of its divisors is an integer number (12837996).

Almost surely, 2^51313079 is an apocalyptic number.

51313079 is a deficient number, since it is larger than the sum of its proper divisors (38905).

51313079 is a wasteful number, since it uses less digits than its factorization.

51313079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38904.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 51313079 is about 7163.3148053119. The cubic root of 51313079 is about 371.6002735094.

The spelling of 51313079 in words is "fifty-one million, three hundred thirteen thousand, seventy-nine".