51317667 has 12 divisors (see below), whose sum is σ = 74959560. Its totient is φ = 33826848.

The previous prime is 51317657. The next prime is 51317681. The reversal of 51317667 is 76671315.

51317667 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 51317667 - 2¹² = 51313571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51317657) 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 11 ways as a sum of consecutive naturals, for example, 31233 + ... + 32834.

It is an arithmetic number, because the mean of its divisors is an integer number (6246630).

Almost surely, 2^51317667 is an apocalyptic number.

51317667 is a deficient number, since it is larger than the sum of its proper divisors (23641893).

51317667 is a wasteful number, since it uses less digits than its factorization.

51317667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64162 (or 64159 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 51317667 is about 7163.6350409551. The cubic root of 51317667 is about 371.6113483418.

It can be divided in two parts, 51317 and 667, that added together give a square (51984 = 228²).

The spelling of 51317667 in words is "fifty-one million, three hundred seventeen thousand, six hundred sixty-seven".