51704120 has 32 divisors (see below), whose sum is σ = 125284320. Its totient is φ = 19090560.

The previous prime is 51704099. The next prime is 51704131. The reversal of 51704120 is 2140715.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 51704092 and 51704101.

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, 49196 + ... + 50235.

It is an arithmetic number, because the mean of its divisors is an integer number (3915135).

Almost surely, 2^51704120 is an apocalyptic number.

It is an amenable number.

51704120 is an abundant number, since it is smaller than the sum of its proper divisors (73580200).

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

51704120 is a wasteful number, since it uses less digits than its factorization.

51704120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99455 (or 99451 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 51704120 is about 7190.5576974251. The cubic root of 51704120 is about 372.5418357589.

Adding to 51704120 its reverse (2140715), we get a palindrome (53844835).

The spelling of 51704120 in words is "fifty-one million, seven hundred four thousand, one hundred twenty".