56919 has 4 divisors (see below), whose sum is σ = 75896. Its totient is φ = 37944.

The previous prime is 56911. The next prime is 56921. The reversal of 56919 is 91965.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56919 - 2³ = 56911 is a prime.

It is a super-2 number, since 2×56919² = 6479545122, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56911) 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 3 ways as a sum of consecutive naturals, for example, 9484 + ... + 9489.

It is an arithmetic number, because the mean of its divisors is an integer number (18974).

2⁵⁶⁹¹⁹ is an apocalyptic number.

56919 is a deficient number, since it is larger than the sum of its proper divisors (18977).

56919 is a wasteful number, since it uses less digits than its factorization.

56919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18976.

The product of its digits is 2430, while the sum is 30.

The square root of 56919 is about 238.5770315852. The cubic root of 56919 is about 38.4667729286.

The spelling of 56919 in words is "fifty-six thousand, nine hundred nineteen".