221466453 has 8 divisors (see below), whose sum is σ = 318003168. Its totient is φ = 136287024.

The previous prime is 221466433. The next prime is 221466499. The reversal of 221466453 is 354664122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221466453 - 2⁶ = 221466389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221466433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2839275 + ... + 2839352.

It is an arithmetic number, because the mean of its divisors is an integer number (39750396).

Almost surely, 2^221466453 is an apocalyptic number.

It is an amenable number.

221466453 is a deficient number, since it is larger than the sum of its proper divisors (96536715).

221466453 is a wasteful number, since it uses less digits than its factorization.

221466453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678643.

The product of its digits is 34560, while the sum is 33.

The square root of 221466453 is about 14881.7489899541. The cubic root of 221466453 is about 605.0194224578.

The spelling of 221466453 in words is "two hundred twenty-one million, four hundred sixty-six thousand, four hundred fifty-three".