201287541 has 24 divisors (see below), whose sum is σ = 336219744. Its totient is φ = 106172640.

The previous prime is 201287453. The next prime is 201287543. The reversal of 201287541 is 145782102.

It is not a de Polignac number, because 201287541 - 2¹³ = 201279349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201287499 and 201287508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201287543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50755 + ... + 54576.

It is an arithmetic number, because the mean of its divisors is an integer number (14009156).

Almost surely, 2^201287541 is an apocalyptic number.

201287541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201287541 is a deficient number, since it is larger than the sum of its proper divisors (134932203).

201287541 is a wasteful number, since it uses less digits than its factorization.

201287541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105361 (or 105354 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 201287541 is about 14187.5840438039. The cubic root of 201287541 is about 586.0557951820.

The spelling of 201287541 in words is "two hundred one million, two hundred eighty-seven thousand, five hundred forty-one".