201645552 has 20 divisors (see below), whose sum is σ = 520917800. Its totient is φ = 67215168.

The previous prime is 201645529. The next prime is 201645559. The reversal of 201645552 is 255546102.

201645552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201645559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2100427 + ... + 2100522.

It is an arithmetic number, because the mean of its divisors is an integer number (26045890).

Almost surely, 2^201645552 is an apocalyptic number.

It is an amenable number.

201645552 is an abundant number, since it is smaller than the sum of its proper divisors (319272248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201645552 is a wasteful number, since it uses less digits than its factorization.

201645552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200960 (or 4200954 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 201645552 is about 14200.1954916121. The cubic root of 201645552 is about 586.4030432874.

The spelling of 201645552 in words is "two hundred one million, six hundred forty-five thousand, five hundred fifty-two".