56819831 has 8 divisors (see below), whose sum is σ = 60320880. Its totient is φ = 53336448.

The previous prime is 56819803. The next prime is 56819837. The reversal of 56819831 is 13891865.

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

It is a cyclic number.

It is not a de Polignac number, because 56819831 - 2⁶ = 56819767 is a prime.

It is a super-2 number, since 2×56819831² = 6456986389737122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56819837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2540 + ... + 10958.

It is an arithmetic number, because the mean of its divisors is an integer number (7540110).

Almost surely, 2^56819831 is an apocalyptic number.

56819831 is a deficient number, since it is larger than the sum of its proper divisors (3501049).

56819831 is a wasteful number, since it uses less digits than its factorization.

56819831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833.

The product of its digits is 51840, while the sum is 41.

The square root of 56819831 is about 7537.8930079963. The cubic root of 56819831 is about 384.4441994169. Note that the first 3 decimals are identical.

The spelling of 56819831 in words is "fifty-six million, eight hundred nineteen thousand, eight hundred thirty-one".