51173608 has 8 divisors (see below), whose sum is σ = 95950530. Its totient is φ = 25586800.

The previous prime is 51173579. The next prime is 51173609. The reversal of 51173608 is 80637115.

It can be written as a sum of positive squares in only one way, i.e., 39463524 + 11710084 = 6282^2 + 3422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 51173608.

It is not an unprimeable number, because it can be changed into a prime (51173609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198343 + ... + 3198358.

Almost surely, 2^51173608 is an apocalyptic number.

It is an amenable number.

51173608 is a deficient number, since it is larger than the sum of its proper divisors (44776922).

51173608 is a wasteful number, since it uses less digits than its factorization.

51173608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396707 (or 6396703 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 51173608 is about 7153.5730932171. The cubic root of 51173608 is about 371.2632932166.

The spelling of 51173608 in words is "fifty-one million, one hundred seventy-three thousand, six hundred eight".