201564655 has 16 divisors (see below), whose sum is σ = 244094400. Its totient is φ = 159782400.

The previous prime is 201564611. The next prime is 201564661. The reversal of 201564655 is 556465102.

201564655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201564655 - 2¹³ = 201556463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201564655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458926 + ... + 459364.

It is an arithmetic number, because the mean of its divisors is an integer number (15255900).

Almost surely, 2^201564655 is an apocalyptic number.

201564655 is a deficient number, since it is larger than the sum of its proper divisors (42529745).

201564655 is a wasteful number, since it uses less digits than its factorization.

201564655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 201564655 is about 14197.3467591660. The cubic root of 201564655 is about 586.3246142622.

The spelling of 201564655 in words is "two hundred one million, five hundred sixty-four thousand, six hundred fifty-five".