201481855 has 16 divisors (see below), whose sum is σ = 244838880. Its totient is φ = 159159168.

The previous prime is 201481811. The next prime is 201481877. The reversal of 201481855 is 558184102.

It is a cyclic number.

It is not a de Polignac number, because 201481855 - 2¹¹ = 201479807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201481855.

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, 140281 + ... + 141709.

It is an arithmetic number, because the mean of its divisors is an integer number (15302430).

Almost surely, 2^201481855 is an apocalyptic number.

201481855 is a deficient number, since it is larger than the sum of its proper divisors (43357025).

201481855 is a wasteful number, since it uses less digits than its factorization.

201481855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 201481855 is about 14194.4304218239. The cubic root of 201481855 is about 586.2443185590.

The spelling of 201481855 in words is "two hundred one million, four hundred eighty-one thousand, eight hundred fifty-five".