56003831 has 16 divisors (see below), whose sum is σ = 64215648. Its totient is φ = 48384000.

The previous prime is 56003813. The next prime is 56003867. The reversal of 56003831 is 13830065.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56003831 is a prime.

It is a super-2 number, since 2×56003831² = 6272858173353122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56003831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56003891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46031 + ... + 47231.

It is an arithmetic number, because the mean of its divisors is an integer number (4013478).

Almost surely, 2^56003831 is an apocalyptic number.

56003831 is a deficient number, since it is larger than the sum of its proper divisors (8211817).

56003831 is a wasteful number, since it uses less digits than its factorization.

56003831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 56003831 is about 7483.5707386247. The cubic root of 56003831 is about 382.5949606881.

Adding to 56003831 its reverse (13830065), we get a palindrome (69833896).

The spelling of 56003831 in words is "fifty-six million, three thousand, eight hundred thirty-one".