51356 has 12 divisors (see below), whose sum is σ = 92568. Its totient is φ = 24912.

The previous prime is 51349. The next prime is 51361. The reversal of 51356 is 65315.

It is a congruent number.

It is an unprimeable number.

51356 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 321.

It is an arithmetic number, because the mean of its divisors is an integer number (7714).

2⁵¹³⁵⁶ is an apocalyptic number.

It is an amenable number.

51356 is a deficient number, since it is larger than the sum of its proper divisors (41212).

51356 is a wasteful number, since it uses less digits than its factorization.

51356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its digits is 450, while the sum is 20.

The square root of 51356 is about 226.6186223592. The cubic root of 51356 is about 37.1703853407.

The spelling of 51356 in words is "fifty-one thousand, three hundred fifty-six".