51049613 has 2 divisors, whose sum is σ = 51049614. Its totient is φ = 51049612.

The previous prime is 51049577. The next prime is 51049651. The reversal of 51049613 is 31694015.

51049613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48748324 + 2301289 = 6982^2 + 1517^2 .

It is a cyclic number.

It is not a de Polignac number, because 51049613 - 2⁸ = 51049357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51049813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25524806 + 25524807.

It is an arithmetic number, because the mean of its divisors is an integer number (25524807).

Almost surely, 2^51049613 is an apocalyptic number.

It is an amenable number.

51049613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51049613 is an equidigital number, since it uses as much as digits as its factorization.

51049613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 51049613 is about 7144.9011889599. The cubic root of 51049613 is about 370.9631904544.

The spelling of 51049613 in words is "fifty-one million, forty-nine thousand, six hundred thirteen".