51059965 has 16 divisors (see below), whose sum is σ = 68475456. Its totient is φ = 36227200.

The previous prime is 51059917. The next prime is 51059971. The reversal of 51059965 is 56995015.

It is not a de Polignac number, because 51059965 - 2¹⁹ = 50535677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9067 + ... + 13576.

It is an arithmetic number, because the mean of its divisors is an integer number (4279716).

Almost surely, 2^51059965 is an apocalyptic number.

51059965 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51059965 is a deficient number, since it is larger than the sum of its proper divisors (17415491).

51059965 is a wasteful number, since it uses less digits than its factorization.

51059965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22700.

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 51059965 is about 7145.6255849296. The cubic root of 51059965 is about 370.9882637845.

The spelling of 51059965 in words is "fifty-one million, fifty-nine thousand, nine hundred sixty-five".