51847878 has 16 divisors (see below), whose sum is σ = 106498800. Its totient is φ = 16815456.

The previous prime is 51847871. The next prime is 51847879. The reversal of 51847878 is 87874815.

It is a super-3 number, since 3×51847878³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51847871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116553 + ... + 116996.

It is an arithmetic number, because the mean of its divisors is an integer number (6656175).

Almost surely, 2^51847878 is an apocalyptic number.

51847878 is an abundant number, since it is smaller than the sum of its proper divisors (54650922).

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

51847878 is a wasteful number, since it uses less digits than its factorization.

51847878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233591.

The product of its digits is 501760, while the sum is 48.

The square root of 51847878 is about 7200.5470625502. The cubic root of 51847878 is about 372.8867877035.

It can be divided in two parts, 51847 and 878, that added together give a palindrome (52725).

The spelling of 51847878 in words is "fifty-one million, eight hundred forty-seven thousand, eight hundred seventy-eight".