51279065 has 8 divisors (see below), whose sum is σ = 62132928. Its totient is φ = 40624560.

The previous prime is 51279023. The next prime is 51279113. The reversal of 51279065 is 56097215.

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

It is a de Polignac number, because none of the positive numbers 2^k-51279065 is a prime.

It is a super-3 number, since 3×51279065³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49271 + ... + 50300.

It is an arithmetic number, because the mean of its divisors is an integer number (7766616).

Almost surely, 2^51279065 is an apocalyptic number.

It is an amenable number.

51279065 is a deficient number, since it is larger than the sum of its proper divisors (10853863).

51279065 is a wasteful number, since it uses less digits than its factorization.

51279065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99679.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 51279065 is about 7160.9402315618. The cubic root of 51279065 is about 371.5181475629.

The spelling of 51279065 in words is "fifty-one million, two hundred seventy-nine thousand, sixty-five".