201039553 has 16 divisors (see below), whose sum is σ = 239524992. Its totient is φ = 166320000.

The previous prime is 201039499. The next prime is 201039583. The reversal of 201039553 is 355930102.

It is a de Polignac number, because none of the positive numbers 2^k-201039553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201039583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253 + ... + 20053.

It is an arithmetic number, because the mean of its divisors is an integer number (14970312).

Almost surely, 2^201039553 is an apocalyptic number.

It is an amenable number.

201039553 is a deficient number, since it is larger than the sum of its proper divisors (38485439).

201039553 is a wasteful number, since it uses less digits than its factorization.

201039553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19896.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 201039553 is about 14178.8417368980. The cubic root of 201039553 is about 585.8150209985.

Adding to 201039553 its reverse (355930102), we get a palindrome (556969655).

The spelling of 201039553 in words is "two hundred one million, thirty-nine thousand, five hundred fifty-three".