201455791 has 4 divisors (see below), whose sum is σ = 201484800. Its totient is φ = 201426784.

The previous prime is 201455789. The next prime is 201455843. The reversal of 201455791 is 197554102.

201455791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 201455791 - 2¹ = 201455789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201455741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (50371200).

Almost surely, 2^201455791 is an apocalyptic number.

201455791 is a deficient number, since it is larger than the sum of its proper divisors (29009).

201455791 is a wasteful number, since it uses less digits than its factorization.

201455791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29008.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 201455791 is about 14193.5122855479. The cubic root of 201455791 is about 586.2190383159.

The spelling of 201455791 in words is "two hundred one million, four hundred fifty-five thousand, seven hundred ninety-one".