51326165 has 16 divisors (see below), whose sum is σ = 68333760. Its totient is φ = 36693120.

The previous prime is 51326153. The next prime is 51326203. The reversal of 51326165 is 56162315.

It is not a de Polignac number, because 51326165 - 2⁸ = 51325909 is a prime.

It is a Curzon 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, 4664 + ... + 11153.

It is an arithmetic number, because the mean of its divisors is an integer number (4270860).

Almost surely, 2^51326165 is an apocalyptic number.

51326165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51326165 is a deficient number, since it is larger than the sum of its proper divisors (17007595).

51326165 is a wasteful number, since it uses less digits than its factorization.

51326165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15892.

The product of its digits is 5400, while the sum is 29.

The square root of 51326165 is about 7164.2281510293. The cubic root of 51326165 is about 371.6318596596.

The spelling of 51326165 in words is "fifty-one million, three hundred twenty-six thousand, one hundred sixty-five".