51745160 has 32 divisors (see below), whose sum is σ = 116826840. Its totient is φ = 20626944.

The previous prime is 51745153. The next prime is 51745163. The reversal of 51745160 is 6154715.

It can be written as a sum of positive squares in 4 ways, for example, as 30713764 + 21031396 = 5542^2 + 4586^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51745163) 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, 10454 + ... + 14586.

Almost surely, 2^51745160 is an apocalyptic number.

It is an amenable number.

51745160 is an abundant number, since it is smaller than the sum of its proper divisors (65081680).

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

51745160 is a wasteful number, since it uses less digits than its factorization.

51745160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51745160 is about 7193.4108738484. The cubic root of 51745160 is about 372.6403777028.

Adding to 51745160 its reverse (6154715), we get a palindrome (57899875).

The spelling of 51745160 in words is "fifty-one million, seven hundred forty-five thousand, one hundred sixty".