51836565 has 16 divisors (see below), whose sum is σ = 90478656. Its totient is φ = 25132800.

The previous prime is 51836563. The next prime is 51836567. The reversal of 51836565 is 56563815.

It is an interprime number because it is at equal distance from previous prime (51836563) and next prime (51836567).

It is not a de Polignac number, because 51836565 - 2¹ = 51836563 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51836563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156916 + ... + 157245.

It is an arithmetic number, because the mean of its divisors is an integer number (5654916).

Almost surely, 2^51836565 is an apocalyptic number.

51836565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51836565 is a deficient number, since it is larger than the sum of its proper divisors (38642091).

51836565 is a wasteful number, since it uses less digits than its factorization.

51836565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314180.

The product of its digits is 108000, while the sum is 39.

The square root of 51836565 is about 7199.7614543817. The cubic root of 51836565 is about 372.8596649279.

The spelling of 51836565 in words is "fifty-one million, eight hundred thirty-six thousand, five hundred sixty-five".