51859648 has 14 divisors (see below), whose sum is σ = 102909116. Its totient is φ = 25929792.

The previous prime is 51859637. The next prime is 51859651. The reversal of 51859648 is 84695815.

It is a junction number, because it is equal to n+sod(n) for n = 51859598 and 51859607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405090 + ... + 405217.

Almost surely, 2^51859648 is an apocalyptic number.

It is an amenable number.

51859648 is a deficient number, since it is larger than the sum of its proper divisors (51049468).

51859648 is an equidigital number, since it uses as much as digits as its factorization.

51859648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810319 (or 810309 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 51859648 is about 7201.3643151836. The cubic root of 51859648 is about 372.9150019435.

The spelling of 51859648 in words is "fifty-one million, eight hundred fifty-nine thousand, six hundred forty-eight".