223142556 has 96 divisors (see below), whose sum is σ = 646266880. Its totient is φ = 58351104.

The previous prime is 223142551. The next prime is 223142581. The reversal of 223142556 is 655241322.

223142556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223142556³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223142551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137880 + ... + 139488.

Almost surely, 2^223142556 is an apocalyptic number.

223142556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223142556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323133440).

223142556 is an abundant number, since it is smaller than the sum of its proper divisors (423124324).

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

223142556 is a wasteful number, since it uses less digits than its factorization.

223142556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1761 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 223142556 is about 14937.9568884101. The cubic root of 223142556 is about 606.5418913107.

Adding to 223142556 its reverse (655241322), we get a palindrome (878383878).

The spelling of 223142556 in words is "two hundred twenty-three million, one hundred forty-two thousand, five hundred fifty-six".