51389346 has 8 divisors (see below), whose sum is σ = 102778704. Its totient is φ = 17129780.

The previous prime is 51389323. The next prime is 51389347. The reversal of 51389346 is 64398315.

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

51389346 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51389347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4282440 + ... + 4282451.

It is an arithmetic number, because the mean of its divisors is an integer number (12847338).

Almost surely, 2^51389346 is an apocalyptic number.

51389346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51389346 is a wasteful number, since it uses less digits than its factorization.

51389346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8564896.

The product of its digits is 77760, while the sum is 39.

The square root of 51389346 is about 7168.6362719837. The cubic root of 51389346 is about 371.7842864299.

The spelling of 51389346 in words is "fifty-one million, three hundred eighty-nine thousand, three hundred forty-six".