201969855 has 20 divisors (see below), whose sum is σ = 362050392. Its totient is φ = 107717040.

The previous prime is 201969851. The next prime is 201969863. The reversal of 201969855 is 558969102.

201969855 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 201969855 - 2² = 201969851 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 201969855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201969851) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 248941 + ... + 249750.

Almost surely, 2^201969855 is an apocalyptic number.

201969855 is a deficient number, since it is larger than the sum of its proper divisors (160080537).

201969855 is an equidigital number, since it uses as much as digits as its factorization.

201969855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498708 (or 498699 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 201969855 is about 14211.6098665844. The cubic root of 201969855 is about 586.7172421461.

The spelling of 201969855 in words is "two hundred one million, nine hundred sixty-nine thousand, eight hundred fifty-five".