221452532 has 24 divisors (see below), whose sum is σ = 452331264. Its totient is φ = 92888352.

The previous prime is 221452529. The next prime is 221452589. The reversal of 221452532 is 235254122.

221452532 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-2 number, since 2×221452532² = 98082447858422048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82823 + ... + 85454.

It is an arithmetic number, because the mean of its divisors is an integer number (18847136).

Almost surely, 2^221452532 is an apocalyptic number.

It is an amenable number.

221452532 is an abundant number, since it is smaller than the sum of its proper divisors (230878732).

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

221452532 is a wasteful number, since it uses less digits than its factorization.

221452532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168335 (or 168333 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 221452532 is about 14881.2812620419. The cubic root of 221452532 is about 605.0067453657.

The spelling of 221452532 in words is "two hundred twenty-one million, four hundred fifty-two thousand, five hundred thirty-two".