51308206 has 8 divisors (see below), whose sum is σ = 77056560. Its totient is φ = 25622688.

The previous prime is 51308149. The next prime is 51308219. The reversal of 51308206 is 60280315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13611 + ... + 16966.

It is an arithmetic number, because the mean of its divisors is an integer number (9632070).

Almost surely, 2^51308206 is an apocalyptic number.

51308206 is a deficient number, since it is larger than the sum of its proper divisors (25748354).

51308206 is a wasteful number, since it uses less digits than its factorization.

51308206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31418.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51308206 is about 7162.9746614099. The cubic root of 51308206 is about 371.5885100013.

The spelling of 51308206 in words is "fifty-one million, three hundred eight thousand, two hundred six".