201455321 has 8 divisors (see below), whose sum is σ = 222580224. Its totient is φ = 181360960.

The previous prime is 201455311. The next prime is 201455333. The reversal of 201455321 is 123554102.

201455321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 201455321 - 2¹⁸ = 201193177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201455311) 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, 257225 + ... + 258006.

It is an arithmetic number, because the mean of its divisors is an integer number (27822528).

Almost surely, 2^201455321 is an apocalyptic number.

It is an amenable number.

201455321 is a deficient number, since it is larger than the sum of its proper divisors (21124903).

201455321 is a wasteful number, since it uses less digits than its factorization.

201455321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515271.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 201455321 is about 14193.4957286780. The cubic root of 201455321 is about 586.2185824290.

The spelling of 201455321 in words is "two hundred one million, four hundred fifty-five thousand, three hundred twenty-one".