201552611 has 12 divisors (see below), whose sum is σ = 227742768. Its totient is φ = 177956064.

The previous prime is 201552577. The next prime is 201552613. The reversal of 201552611 is 116255102.

It is a happy number.

It is not a de Polignac number, because 201552611 - 2¹⁰ = 201551587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201552613) 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 11 ways as a sum of consecutive naturals, for example, 22040 + ... + 29813.

It is an arithmetic number, because the mean of its divisors is an integer number (18978564).

Almost surely, 2^201552611 is an apocalyptic number.

201552611 is a deficient number, since it is larger than the sum of its proper divisors (26190157).

201552611 is a wasteful number, since it uses less digits than its factorization.

201552611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51902 (or 51889 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 201552611 is about 14196.9225890684. The cubic root of 201552611 is about 586.3129359014.

The spelling of 201552611 in words is "two hundred one million, five hundred fifty-two thousand, six hundred eleven".