201851141 has 4 divisors (see below), whose sum is σ = 202636812. Its totient is φ = 201065472.

The previous prime is 201851119. The next prime is 201851161. The reversal of 201851141 is 141158102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146289025 + 55562116 = 12095^2 + 7454^2 .

It is a cyclic number.

It is not a de Polignac number, because 201851141 - 2¹⁴ = 201834757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201851161) 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, 392450 + ... + 392963.

It is an arithmetic number, because the mean of its divisors is an integer number (50659203).

Almost surely, 2^201851141 is an apocalyptic number.

It is an amenable number.

201851141 is a deficient number, since it is larger than the sum of its proper divisors (785671).

201851141 is an equidigital number, since it uses as much as digits as its factorization.

201851141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785670.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 201851141 is about 14207.4325970599. The cubic root of 201851141 is about 586.6022659091.

The spelling of 201851141 in words is "two hundred one million, eight hundred fifty-one thousand, one hundred forty-one".