201655797 has 32 divisors (see below), whose sum is σ = 325017600. Its totient is φ = 108641088.

The previous prime is 201655793. The next prime is 201655799. The reversal of 201655797 is 797556102.

It is not a de Polignac number, because 201655797 - 2² = 201655793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201655793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90268 + ... + 92474.

It is an arithmetic number, because the mean of its divisors is an integer number (10156800).

Almost surely, 2^201655797 is an apocalyptic number.

It is an amenable number.

201655797 is a deficient number, since it is larger than the sum of its proper divisors (123361803).

201655797 is a wasteful number, since it uses less digits than its factorization.

201655797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465.

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 201655797 is about 14200.5562215006. The cubic root of 201655797 is about 586.4129742403.

The spelling of 201655797 in words is "two hundred one million, six hundred fifty-five thousand, seven hundred ninety-seven".