201522253 has 4 divisors (see below), whose sum is σ = 203599900. Its totient is φ = 199444608.

The previous prime is 201522197. The next prime is 201522263. The reversal of 201522253 is 352225102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81685444 + 119836809 = 9038^2 + 10947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201522253 is a prime.

It is a super-2 number, since 2×201522253² = 81222436908392018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201522263) 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, 1038678 + ... + 1038871.

It is an arithmetic number, because the mean of its divisors is an integer number (50899975).

Almost surely, 2^201522253 is an apocalyptic number.

It is an amenable number.

201522253 is a deficient number, since it is larger than the sum of its proper divisors (2077647).

201522253 is an equidigital number, since it uses as much as digits as its factorization.

201522253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077646.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 201522253 is about 14195.8533734327. The cubic root of 201522253 is about 586.2834974639.

Adding to 201522253 its reverse (352225102), we get a palindrome (553747355).

The spelling of 201522253 in words is "two hundred one million, five hundred twenty-two thousand, two hundred fifty-three".