201506535 has 56 divisors (see below), whose sum is σ = 369084240. Its totient is φ = 105535872.

The previous prime is 201506527. The next prime is 201506537. The reversal of 201506535 is 535605102.

201506535 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 0 + 653 + 5 = 666.

It is not a de Polignac number, because 201506535 - 2³ = 201506527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 201506499 and 201506508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201506537) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 214587 + ... + 215523.

It is an arithmetic number, because the mean of its divisors is an integer number (6590790).

Almost surely, 2^201506535 is an apocalyptic number.

201506535 is a deficient number, since it is larger than the sum of its proper divisors (167577705).

201506535 is an frugal number, since it uses more digits than its factorization.

201506535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 201506535 is about 14195.2997502695. The cubic root of 201506535 is about 586.2682544101.

The spelling of 201506535 in words is "two hundred one million, five hundred six thousand, five hundred thirty-five".