51585822 has 20 divisors (see below), whose sum is σ = 115590816. Its totient is φ = 17195220.

The previous prime is 51585791. The next prime is 51585823. The reversal of 51585822 is 22858515.

51585822 is a `hidden beast` number, since 51 + 585 + 8 + 22 = 666.

It is a super-3 number, since 3×51585822³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51585823) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 159054 + ... + 159377.

Almost surely, 2^51585822 is an apocalyptic number.

51585822 is an abundant number, since it is smaller than the sum of its proper divisors (64004994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51585822 is a wasteful number, since it uses less digits than its factorization.

51585822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318445 (or 318436 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 51585822 is about 7182.3270602222. The cubic root of 51585822 is about 372.2574960194.

The spelling of 51585822 in words is "fifty-one million, five hundred eighty-five thousand, eight hundred twenty-two".