56351 has 4 divisors (see below), whose sum is σ = 57912.
Its totient is φ = 54792.
The previous prime is 56333. The next prime is 56359. The reversal of 56351 is 15365.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-56351 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (56359) 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, 725 + ... + 798.
It is an arithmetic number, because the mean of its divisors is an integer number (14478).
256351 is an apocalyptic number.
56351 is a deficient number, since it is larger than the sum of its proper divisors (1561).
56351 is a wasteful number, since it uses less digits than its factorization.
56351 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1560.
The product of its digits is 450, while the sum is 20.
The square root of 56351 is about 237.3836557137.
The cubic root of 56351 is about 38.3383904271.
The spelling of 56351 in words is "fifty-six thousand, three hundred fifty-one".