51208427 has 8 divisors (see below), whose sum is σ = 52932096. Its totient is φ = 49511272.

The previous prime is 51208397. The next prime is 51208429. The reversal of 51208427 is 72480215.

51208427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51208427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51208427.

It is not an unprimeable number, because it can be changed into a prime (51208429) 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 in 7 ways as a sum of consecutive naturals, for example, 2663 + ... + 10464.

It is an arithmetic number, because the mean of its divisors is an integer number (6616512).

Almost surely, 2^51208427 is an apocalyptic number.

51208427 is a deficient number, since it is larger than the sum of its proper divisors (1723669).

51208427 is a wasteful number, since it uses less digits than its factorization.

51208427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13257.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 51208427 is about 7156.0063582979. The cubic root of 51208427 is about 371.3474777949.

The spelling of 51208427 in words is "fifty-one million, two hundred eight thousand, four hundred twenty-seven".