201855041 has 4 divisors (see below), whose sum is σ = 201889584. Its totient is φ = 201820500.

The previous prime is 201855037. The next prime is 201855077. The reversal of 201855041 is 140558102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140558102 = 2 ⋅70279051.

It is a cyclic number.

It is not a de Polignac number, because 201855041 - 2² = 201855037 is a prime.

It is a super-2 number, since 2×201855041² = 81490915154223362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201855041.

It is not an unprimeable number, because it can be changed into a prime (201855011) 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, 6095 + ... + 20996.

It is an arithmetic number, because the mean of its divisors is an integer number (50472396).

Almost surely, 2^201855041 is an apocalyptic number.

It is an amenable number.

201855041 is a deficient number, since it is larger than the sum of its proper divisors (34543).

201855041 is an equidigital number, since it uses as much as digits as its factorization.

201855041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34542.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 201855041 is about 14207.5698484998. The cubic root of 201855041 is about 586.6060438319.

The spelling of 201855041 in words is "two hundred one million, eight hundred fifty-five thousand, forty-one".