51827864 has 16 divisors (see below), whose sum is σ = 106011720. Its totient is φ = 23558080.

The previous prime is 51827863. The next prime is 51827869. The reversal of 51827864 is 46872815.

It is a super-2 number, since 2×51827864² = 5372254973604992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51827863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294389 + ... + 294564.

Almost surely, 2^51827864 is an apocalyptic number.

It is an amenable number.

51827864 is an abundant number, since it is smaller than the sum of its proper divisors (54183856).

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

51827864 is a wasteful number, since it uses less digits than its factorization.

51827864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588970 (or 588966 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 51827864 is about 7199.1571728918. The cubic root of 51827864 is about 372.8388017046.

It can be divided in two parts, 518 and 27864, that added together give a palindrome (28382).

The spelling of 51827864 in words is "fifty-one million, eight hundred twenty-seven thousand, eight hundred sixty-four".