51305011 has 2 divisors, whose sum is σ = 51305012. Its totient is φ = 51305010.

The previous prime is 51304961. The next prime is 51305017. The reversal of 51305011 is 11050315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51305011 - 2⁹ = 51304499 is a prime.

It is not a weakly prime, because it can be changed into another prime (51305017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25652505 + 25652506.

It is an arithmetic number, because the mean of its divisors is an integer number (25652506).

Almost surely, 2^51305011 is an apocalyptic number.

51305011 is a deficient number, since it is larger than the sum of its proper divisors (1).

51305011 is an equidigital number, since it uses as much as digits as its factorization.

51305011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 51305011 is about 7162.7516360684. The cubic root of 51305011 is about 371.5807968106.

Adding to 51305011 its reverse (11050315), we get a palindrome (62355326).

The spelling of 51305011 in words is "fifty-one million, three hundred five thousand, eleven".