51608507 has 2 divisors, whose sum is σ = 51608508. Its totient is φ = 51608506.

The previous prime is 51608497. The next prime is 51608533. The reversal of 51608507 is 70580615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51608507 - 2⁶ = 51608443 is a prime.

It is a Chen prime.

It is equal to p_3091793 and since 51608507 and 3091793 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51608587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25804253 + 25804254.

It is an arithmetic number, because the mean of its divisors is an integer number (25804254).

Almost surely, 2^51608507 is an apocalyptic number.

51608507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51608507 is an equidigital number, since it uses as much as digits as its factorization.

51608507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 51608507 is about 7183.9061101882. The cubic root of 51608507 is about 372.3120550915.

The spelling of 51608507 in words is "fifty-one million, six hundred eight thousand, five hundred seven".