222531534 has 48 divisors (see below), whose sum is σ = 511505280. Its totient is φ = 69722640.

The previous prime is 222531527. The next prime is 222531541. The reversal of 222531534 is 435135222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222531527) and next prime (222531541).

It is a junction number, because it is equal to n+sod(n) for n = 222531498 and 222531507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42319 + ... + 47285.

It is an arithmetic number, because the mean of its divisors is an integer number (10656360).

Almost surely, 2^222531534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222531534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255752640).

222531534 is an abundant number, since it is smaller than the sum of its proper divisors (288973746).

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

222531534 is a wasteful number, since it uses less digits than its factorization.

222531534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125 (or 5122 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 222531534 is about 14917.4908748087. The cubic root of 222531534 is about 605.9877623905.

Adding to 222531534 its reverse (435135222), we get a palindrome (657666756).

The spelling of 222531534 in words is "two hundred twenty-two million, five hundred thirty-one thousand, five hundred thirty-four".