51804860 has 24 divisors (see below), whose sum is σ = 110576256. Its totient is φ = 20381760.

The previous prime is 51804839. The next prime is 51804871. The reversal of 51804860 is 6840815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20012 + ... + 22451.

It is an arithmetic number, because the mean of its divisors is an integer number (4607344).

Almost surely, 2^51804860 is an apocalyptic number.

It is an amenable number.

51804860 is an abundant number, since it is smaller than the sum of its proper divisors (58771396).

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

51804860 is a wasteful number, since it uses less digits than its factorization.

51804860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42533 (or 42531 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 51804860 is about 7197.5593085434. The cubic root of 51804860 is about 372.7836315549.

The spelling of 51804860 in words is "fifty-one million, eight hundred four thousand, eight hundred sixty".