51010613 has 2 divisors, whose sum is σ = 51010614. Its totient is φ = 51010612.

The previous prime is 51010577. The next prime is 51010627. The reversal of 51010613 is 31601015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50367409 + 643204 = 7097^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 51010613 - 2¹² = 51006517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51010591 and 51010600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51010643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505306 + 25505307.

It is an arithmetic number, because the mean of its divisors is an integer number (25505307).

Almost surely, 2^51010613 is an apocalyptic number.

It is an amenable number.

51010613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51010613 is an equidigital number, since it uses as much as digits as its factorization.

51010613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 51010613 is about 7142.1714485162. The cubic root of 51010613 is about 370.8686990412.

Adding to 51010613 its reverse (31601015), we get a palindrome (82611628).

The spelling of 51010613 in words is "fifty-one million, ten thousand, six hundred thirteen".