201455251 has 8 divisors (see below), whose sum is σ = 203019840. Its totient is φ = 199897152.

The previous prime is 201455249. The next prime is 201455297. The reversal of 201455251 is 152554102.

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 201455251 - 2¹ = 201455249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201455201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73461 + ... + 76153.

It is an arithmetic number, because the mean of its divisors is an integer number (25377480).

Almost surely, 2^201455251 is an apocalyptic number.

201455251 is a deficient number, since it is larger than the sum of its proper divisors (1564589).

201455251 is a wasteful number, since it uses less digits than its factorization.

201455251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 201455251 is about 14193.4932627595. The cubic root of 201455251 is about 586.2185145309.

The spelling of 201455251 in words is "two hundred one million, four hundred fifty-five thousand, two hundred fifty-one".