51210899 has 2 divisors, whose sum is σ = 51210900. Its totient is φ = 51210898.

The previous prime is 51210889. The next prime is 51210911. The reversal of 51210899 is 99801215.

51210899 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 is a cyclic number.

It is not a de Polignac number, because 51210899 - 2⁴ = 51210883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51210889) 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, 25605449 + 25605450.

It is an arithmetic number, because the mean of its divisors is an integer number (25605450).

Almost surely, 2^51210899 is an apocalyptic number.

51210899 is a deficient number, since it is larger than the sum of its proper divisors (1).

51210899 is an equidigital number, since it uses as much as digits as its factorization.

51210899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 51210899 is about 7156.1790782512. The cubic root of 51210899 is about 371.3534530888.

It can be divided in two parts, 512 and 10899, that added together give a palindrome (11411).

The spelling of 51210899 in words is "fifty-one million, two hundred ten thousand, eight hundred ninety-nine".