51911279 has 8 divisors (see below), whose sum is σ = 59904000. Its totient is φ = 44062776.

The previous prime is 51911263. The next prime is 51911281. The reversal of 51911279 is 97211915.

51911279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51911279 - 2⁴ = 51911263 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 (51911219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35279 + ... + 36720.

It is an arithmetic number, because the mean of its divisors is an integer number (7488000).

Almost surely, 2^51911279 is an apocalyptic number.

51911279 is a deficient number, since it is larger than the sum of its proper divisors (7992721).

51911279 is a wasteful number, since it uses less digits than its factorization.

51911279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72109.

The product of its digits is 5670, while the sum is 35.

The square root of 51911279 is about 7204.9482302096. The cubic root of 51911279 is about 373.0387178386.

The spelling of 51911279 in words is "fifty-one million, nine hundred eleven thousand, two hundred seventy-nine".