51051907 has 2 divisors, whose sum is σ = 51051908. Its totient is φ = 51051906.

The previous prime is 51051887. The next prime is 51051941. The reversal of 51051907 is 70915015.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51051907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51051997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525953 + 25525954.

It is an arithmetic number, because the mean of its divisors is an integer number (25525954).

Almost surely, 2^51051907 is an apocalyptic number.

51051907 is a deficient number, since it is larger than the sum of its proper divisors (1).

51051907 is an equidigital number, since it uses as much as digits as its factorization.

51051907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 51051907 is about 7145.0617212170. The cubic root of 51051907 is about 370.9687469889.

The spelling of 51051907 in words is "fifty-one million, fifty-one thousand, nine hundred seven".