51510071 has 2 divisors, whose sum is σ = 51510072. Its totient is φ = 51510070.

The previous prime is 51510059. The next prime is 51510077. The reversal of 51510071 is 17001515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51510071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51510077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25755035 + 25755036.

It is an arithmetic number, because the mean of its divisors is an integer number (25755036).

Almost surely, 2^51510071 is an apocalyptic number.

51510071 is a deficient number, since it is larger than the sum of its proper divisors (1).

51510071 is an equidigital number, since it uses as much as digits as its factorization.

51510071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 51510071 is about 7177.0516927217. The cubic root of 51510071 is about 372.0751933982.

Adding to 51510071 its reverse (17001515), we get a palindrome (68511586).

The spelling of 51510071 in words is "fifty-one million, five hundred ten thousand, seventy-one".