201855467 has 20 divisors (see below), whose sum is σ = 235390680. Its totient is φ = 172497600.

The previous prime is 201855443. The next prime is 201855473. The reversal of 201855467 is 764558102.

It is not a de Polignac number, because 201855467 - 2⁸ = 201855211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201855467.

It is not an unprimeable number, because it can be changed into a prime (201855427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 248492 + ... + 249302.

It is an arithmetic number, because the mean of its divisors is an integer number (11769534).

Almost surely, 2^201855467 is an apocalyptic number.

201855467 is a deficient number, since it is larger than the sum of its proper divisors (33535213).

201855467 is an frugal number, since it uses more digits than its factorization.

201855467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 201855467 is about 14207.5848404998. The cubic root of 201855467 is about 586.6064564944.

It can be divided in two parts, 20185 and 5467, that added together give a palindrome (25652).

The spelling of 201855467 in words is "two hundred one million, eight hundred fifty-five thousand, four hundred sixty-seven".