56143224 has 24 divisors (see below), whose sum is σ = 152054760. Its totient is φ = 18714384.

The previous prime is 56143223. The next prime is 56143237. The reversal of 56143224 is 42234165.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×56143224² = 6304123202228352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56143223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389812 + ... + 389955.

It is an arithmetic number, because the mean of its divisors is an integer number (6335615).

Almost surely, 2^56143224 is an apocalyptic number.

It is an amenable number.

56143224 is an abundant number, since it is smaller than the sum of its proper divisors (95911536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56143224 is a wasteful number, since it uses less digits than its factorization.

56143224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779779 (or 779772 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 56143224 is about 7492.8782186821. The cubic root of 56143224 is about 382.9121227623.

Adding to 56143224 its reverse (42234165), we get a palindrome (98377389).

The spelling of 56143224 in words is "fifty-six million, one hundred forty-three thousand, two hundred twenty-four".