51847130 has 16 divisors (see below), whose sum is σ = 93406824. Its totient is φ = 20720640.

The previous prime is 51847123. The next prime is 51847151. The reversal of 51847130 is 3174815.

It can be written as a sum of positive squares in 4 ways, for example, as 50027329 + 1819801 = 7073^2 + 1349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51847093 and 51847102.

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, 21590 + ... + 23870.

Almost surely, 2^51847130 is an apocalyptic number.

51847130 is a deficient number, since it is larger than the sum of its proper divisors (41559694).

51847130 is a wasteful number, since it uses less digits than its factorization.

51847130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 51847130 is about 7200.4951218649. The cubic root of 51847130 is about 372.8849945047.

The spelling of 51847130 in words is "fifty-one million, eight hundred forty-seven thousand, one hundred thirty".