51878860 has 24 divisors (see below), whose sum is σ = 118850256. Its totient is φ = 18864960.

The previous prime is 51878857. The next prime is 51878861. The reversal of 51878860 is 6887815.

It is a super-2 number, since 2×51878860² = 5382832229799200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51878861) 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, 117687 + ... + 118126.

It is an arithmetic number, because the mean of its divisors is an integer number (4952094).

Almost surely, 2^51878860 is an apocalyptic number.

It is an amenable number.

51878860 is an abundant number, since it is smaller than the sum of its proper divisors (66971396).

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

51878860 is a wasteful number, since it uses less digits than its factorization.

51878860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235833 (or 235831 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 51878860 is about 7202.6981055713. The cubic root of 51878860 is about 372.9610464679.

The spelling of 51878860 in words is "fifty-one million, eight hundred seventy-eight thousand, eight hundred sixty".