201016540 has 24 divisors (see below), whose sum is σ = 429292080. Its totient is φ = 79043328.

The previous prime is 201016537. The next prime is 201016559. The reversal of 201016540 is 45610102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83997 + ... + 86356.

It is an arithmetic number, because the mean of its divisors is an integer number (17887170).

Almost surely, 2^201016540 is an apocalyptic number.

201016540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201016540 is an abundant number, since it is smaller than the sum of its proper divisors (228275540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201016540 is a wasteful number, since it uses less digits than its factorization.

201016540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170421 (or 170419 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 201016540 is about 14178.0301875825. The cubic root of 201016540 is about 585.7926673948.

Adding to 201016540 its reverse (45610102), we get a palindrome (246626642).

The spelling of 201016540 in words is "two hundred one million, sixteen thousand, five hundred forty".