51230205 has 32 divisors (see below), whose sum is σ = 98085120. Its totient is φ = 25220160.

The previous prime is 51230183. The next prime is 51230219. The reversal of 51230205 is 50203215.

It is a happy number.

It is not a de Polignac number, because 51230205 - 2⁹ = 51229693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12841 + ... + 16350.

It is an arithmetic number, because the mean of its divisors is an integer number (3065160).

Almost surely, 2^51230205 is an apocalyptic number.

It is an amenable number.

51230205 is a deficient number, since it is larger than the sum of its proper divisors (46854915).

51230205 is a wasteful number, since it uses less digits than its factorization.

51230205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29218 (or 29212 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 51230205 is about 7157.5278553422. The cubic root of 51230205 is about 371.4001127463.

The spelling of 51230205 in words is "fifty-one million, two hundred thirty thousand, two hundred five".