201013551 has 6 divisors (see below), whose sum is σ = 290352920. Its totient is φ = 134009028.

The previous prime is 201013543. The next prime is 201013639. The reversal of 201013551 is 155310102.

It is not a de Polignac number, because 201013551 - 2³ = 201013543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201013451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11167411 + ... + 11167428.

Almost surely, 2^201013551 is an apocalyptic number.

201013551 is a deficient number, since it is larger than the sum of its proper divisors (89339369).

201013551 is a wasteful number, since it uses less digits than its factorization.

201013551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334845 (or 22334842 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 201013551 is about 14177.9247776253. The cubic root of 201013551 is about 585.7897639140.

Adding to 201013551 its reverse (155310102), we get a palindrome (356323653).

The spelling of 201013551 in words is "two hundred one million, thirteen thousand, five hundred fifty-one".