51020679 has 4 divisors (see below), whose sum is σ = 68027576. Its totient is φ = 34013784.

The previous prime is 51020677. The next prime is 51020731. The reversal of 51020679 is 97602015.

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

It is not a de Polignac number, because 51020679 - 2¹ = 51020677 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 (51020677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8503444 + ... + 8503449.

It is an arithmetic number, because the mean of its divisors is an integer number (17006894).

Almost surely, 2^51020679 is an apocalyptic number.

51020679 is a deficient number, since it is larger than the sum of its proper divisors (17006897).

51020679 is a wasteful number, since it uses less digits than its factorization.

51020679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17006896.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 51020679 is about 7142.8761014034. The cubic root of 51020679 is about 370.8930921271.

The spelling of 51020679 in words is "fifty-one million, twenty thousand, six hundred seventy-nine".