201011953 has 4 divisors (see below), whose sum is σ = 201092068. Its totient is φ = 200931840.

The previous prime is 201011939. The next prime is 201011959. The reversal of 201011953 is 359110102.

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 64192144 + 136819809 = 8012^2 + 11697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201011953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201011959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36168 + ... + 41353.

It is an arithmetic number, because the mean of its divisors is an integer number (50273017).

Almost surely, 2^201011953 is an apocalyptic number.

It is an amenable number.

201011953 is a deficient number, since it is larger than the sum of its proper divisors (80115).

201011953 is an equidigital number, since it uses as much as digits as its factorization.

201011953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80114.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 201011953 is about 14177.8684222982. The cubic root of 201011953 is about 585.7882116231.

The spelling of 201011953 in words is "two hundred one million, eleven thousand, nine hundred fifty-three".