223021552 has 20 divisors (see below), whose sum is σ = 465343480. Its totient is φ = 102932928.

The previous prime is 223021537. The next prime is 223021567. The reversal of 223021552 is 255120322.

It is an interprime number because it is at equal distance from previous prime (223021537) and next prime (223021567).

It is a super-2 number, since 2×223021552² = 99477225312977408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535902 + ... + 536317.

It is an arithmetic number, because the mean of its divisors is an integer number (23267174).

Almost surely, 2^223021552 is an apocalyptic number.

It is an amenable number.

223021552 is an abundant number, since it is smaller than the sum of its proper divisors (242321928).

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

223021552 is a wasteful number, since it uses less digits than its factorization.

223021552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072240 (or 1072234 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 223021552 is about 14933.9061199674. The cubic root of 223021552 is about 606.4322345561.

Adding to 223021552 its reverse (255120322), we get a palindrome (478141874).

The spelling of 223021552 in words is "two hundred twenty-three million, twenty-one thousand, five hundred fifty-two".