51996907 has 2 divisors, whose sum is σ = 51996908. Its totient is φ = 51996906.

The previous prime is 51996881. The next prime is 51996911. The reversal of 51996907 is 70969915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51996907 - 2¹⁵ = 51964139 is a prime.

It is not a weakly prime, because it can be changed into another prime (51996937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25998453 + 25998454.

It is an arithmetic number, because the mean of its divisors is an integer number (25998454).

Almost surely, 2^51996907 is an apocalyptic number.

51996907 is a deficient number, since it is larger than the sum of its proper divisors (1).

51996907 is an equidigital number, since it uses as much as digits as its factorization.

51996907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 51996907 is about 7210.8880867754. Note that the first 3 decimals coincide. The cubic root of 51996907 is about 373.2437151138.

The spelling of 51996907 in words is "fifty-one million, nine hundred ninety-six thousand, nine hundred seven".