221253552 has 80 divisors (see below), whose sum is σ = 683949280. Its totient is φ = 68076288.

The previous prime is 221253547. The next prime is 221253563. The reversal of 221253552 is 255352122.

221253552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14083 + ... + 25314.

It is an arithmetic number, because the mean of its divisors is an integer number (8549366).

Almost surely, 2^221253552 is an apocalyptic number.

It is an amenable number.

221253552 is an abundant number, since it is smaller than the sum of its proper divisors (462695728).

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

221253552 is a wasteful number, since it uses less digits than its factorization.

221253552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39427 (or 39415 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 221253552 is about 14874.5941793381. The cubic root of 221253552 is about 604.8254870842.

The spelling of 221253552 in words is "two hundred twenty-one million, two hundred fifty-three thousand, five hundred fifty-two".