201522545 has 12 divisors (see below), whose sum is σ = 281309364. Its totient is φ = 138186720.

The previous prime is 201522523. The next prime is 201522551. The reversal of 201522545 is 545225102.

201522545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 84860944 + 116661601 = 9212^2 + 10801^2 .

It is not a de Polignac number, because 201522545 - 2¹⁴ = 201506161 is a prime.

It is a super-2 number, since 2×201522545² = 81222672286554050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411026 + ... + 411515.

It is an arithmetic number, because the mean of its divisors is an integer number (23442447).

Almost surely, 2^201522545 is an apocalyptic number.

It is an amenable number.

201522545 is a deficient number, since it is larger than the sum of its proper divisors (79786819).

201522545 is an equidigital number, since it uses as much as digits as its factorization.

201522545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822560 (or 822553 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 201522545 is about 14195.8636581224. The cubic root of 201522545 is about 586.2837806331.

Adding to 201522545 its reverse (545225102), we get a palindrome (746747647).

The spelling of 201522545 in words is "two hundred one million, five hundred twenty-two thousand, five hundred forty-five".