51392859 has 8 divisors (see below), whose sum is σ = 78312960. Its totient is φ = 29367336.

The previous prime is 51392857. The next prime is 51392863. The reversal of 51392859 is 95829315.

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

It is not a de Polignac number, because 51392859 - 2¹ = 51392857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51392859.

It is not an unprimeable number, because it can be changed into a prime (51392857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223619 + ... + 1223660.

It is an arithmetic number, because the mean of its divisors is an integer number (9789120).

Almost surely, 2^51392859 is an apocalyptic number.

51392859 is a deficient number, since it is larger than the sum of its proper divisors (26920101).

51392859 is a wasteful number, since it uses less digits than its factorization.

51392859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447289.

The product of its digits is 97200, while the sum is 42.

The square root of 51392859 is about 7168.8812934795. The cubic root of 51392859 is about 371.7927580201.

The spelling of 51392859 in words is "fifty-one million, three hundred ninety-two thousand, eight hundred fifty-nine".