51317307 has 40 divisors (see below), whose sum is σ = 80289792. Its totient is φ = 32626800.

The previous prime is 51317293. The next prime is 51317341. The reversal of 51317307 is 70371315.

51317307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51317307 - 2⁴ = 51317291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51317507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 268582 + ... + 268772.

Almost surely, 2^51317307 is an apocalyptic number.

51317307 is a deficient number, since it is larger than the sum of its proper divisors (28972485).

51317307 is a wasteful number, since it uses less digits than its factorization.

51317307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 51317307 is about 7163.6099140029. The cubic root of 51317307 is about 371.6104793727.

The spelling of 51317307 in words is "fifty-one million, three hundred seventeen thousand, three hundred seven".