51885321 has 16 divisors (see below), whose sum is σ = 73094400. Its totient is φ = 32684288.

The previous prime is 51885313. The next prime is 51885373. The reversal of 51885321 is 12358815.

It is a happy number.

51885321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51885321 - 2³ = 51885313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51885311) 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 15 ways as a sum of consecutive naturals, for example, 2256 + ... + 10433.

It is an arithmetic number, because the mean of its divisors is an integer number (4568400).

Almost surely, 2^51885321 is an apocalyptic number.

It is an amenable number.

51885321 is a deficient number, since it is larger than the sum of its proper divisors (21209079).

51885321 is a wasteful number, since it uses less digits than its factorization.

51885321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12768.

The product of its digits is 9600, while the sum is 33.

The square root of 51885321 is about 7203.1466040891. The cubic root of 51885321 is about 372.9765286977.

The spelling of 51885321 in words is "fifty-one million, eight hundred eighty-five thousand, three hundred twenty-one".