201355065 has 80 divisors (see below), whose sum is σ = 384721920. Its totient is φ = 100465920.

The previous prime is 201355057. The next prime is 201355067. The reversal of 201355065 is 560553102.

201355065 is a `hidden beast` number, since 20 + 135 + 506 + 5 = 666.

It is not a de Polignac number, because 201355065 - 2³ = 201355057 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (201355067) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1054120 + ... + 1054310.

It is an arithmetic number, because the mean of its divisors is an integer number (4809024).

Almost surely, 2^201355065 is an apocalyptic number.

It is an amenable number.

201355065 is a deficient number, since it is larger than the sum of its proper divisors (183366855).

201355065 is a wasteful number, since it uses less digits than its factorization.

201355065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 355 counting only the distinct ones).

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

The square root of 201355065 is about 14189.9635306085. The cubic root of 201355065 is about 586.1213206936.

It can be divided in two parts, 20135 and 5065, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 201355065 in words is "two hundred one million, three hundred fifty-five thousand, sixty-five".