51150013 has 2 divisors, whose sum is σ = 51150014. Its totient is φ = 51150012.

The previous prime is 51149993. The next prime is 51150017. The reversal of 51150013 is 31005115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47844889 + 3305124 = 6917^2 + 1818^2 .

It is a cyclic number.

It is not a de Polignac number, because 51150013 - 2⁵ = 51149981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51150017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25575006 + 25575007.

It is an arithmetic number, because the mean of its divisors is an integer number (25575007).

Almost surely, 2^51150013 is an apocalyptic number.

It is an amenable number.

51150013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51150013 is an equidigital number, since it uses as much as digits as its factorization.

51150013 is an odious number, because the sum of its binary digits is odd.

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

The square root of 51150013 is about 7151.9237272219. The cubic root of 51150013 is about 371.2062240591.

Adding to 51150013 its reverse (31005115), we get a palindrome (82155128).

The spelling of 51150013 in words is "fifty-one million, one hundred fifty thousand, thirteen".