201543053 has 2 divisors, whose sum is σ = 201543054. Its totient is φ = 201543052.

The previous prime is 201543049. The next prime is 201543061. The reversal of 201543053 is 350345102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200873929 + 669124 = 14173^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 201543053 - 2² = 201543049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201543073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100771526 + 100771527.

It is an arithmetic number, because the mean of its divisors is an integer number (100771527).

Almost surely, 2^201543053 is an apocalyptic number.

It is an amenable number.

201543053 is a deficient number, since it is larger than the sum of its proper divisors (1).

201543053 is an equidigital number, since it uses as much as digits as its factorization.

201543053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 201543053 is about 14196.5859628292. The cubic root of 201543053 is about 586.3036677379.

Adding to 201543053 its reverse (350345102), we get a palindrome (551888155).

The spelling of 201543053 in words is "two hundred one million, five hundred forty-three thousand, fifty-three".