50551513 has 2 divisors, whose sum is σ = 50551514. Its totient is φ = 50551512.

The previous prime is 50551511. The next prime is 50551517. The reversal of 50551513 is 31515505.

50551513 = 5027² + 5028².

50551513 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., 25280784 + 25270729 = 5028^2 + 5027^2 .

It is a cyclic number.

It is not a de Polignac number, because 50551513 - 2¹ = 50551511 is a prime.

Together with 50551511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (50551511) 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, 25275756 + 25275757.

It is an arithmetic number, because the mean of its divisors is an integer number (25275757).

Almost surely, 2^50551513 is an apocalyptic number.

50551513 is the 5028-th centered square number.

It is an amenable number.

50551513 is a deficient number, since it is larger than the sum of its proper divisors (1).

50551513 is an equidigital number, since it uses as much as digits as its factorization.

50551513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 50551513 is about 7109.9587199927. The cubic root of 50551513 is about 369.7527274058.

The spelling of 50551513 in words is "fifty million, five hundred fifty-one thousand, five hundred thirteen".