201540500 has 96 divisors (see below), whose sum is σ = 509483520. Its totient is φ = 68217600.

The previous prime is 201540499. The next prime is 201540539. The reversal of 201540500 is 5045102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311177 + ... + 311823.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^201540500 is an apocalyptic number.

201540500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201540500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254741760).

201540500 is an abundant number, since it is smaller than the sum of its proper divisors (307943020).

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

201540500 is a wasteful number, since it uses less digits than its factorization.

201540500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 201540500 is about 14196.4960465602. The cubic root of 201540500 is about 586.3011921055.

Adding to 201540500 its reverse (5045102), we get a palindrome (206585602).

The spelling of 201540500 in words is "two hundred one million, five hundred forty thousand, five hundred".