201561035 has 8 divisors (see below), whose sum is σ = 260478960. Its totient is φ = 148845024.

The previous prime is 201561011. The next prime is 201561037. The reversal of 201561035 is 530165102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201561035 - 2⁶ = 201560971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201561035.

It is not an unprimeable number, because it can be changed into a prime (201561037) 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 7 ways as a sum of consecutive naturals, for example, 1550405 + ... + 1550534.

It is an arithmetic number, because the mean of its divisors is an integer number (32559870).

Almost surely, 2^201561035 is an apocalyptic number.

201561035 is a deficient number, since it is larger than the sum of its proper divisors (58917925).

201561035 is a wasteful number, since it uses less digits than its factorization.

201561035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100957.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 201561035 is about 14197.2192699838. The cubic root of 201561035 is about 586.3211042093.

The spelling of 201561035 in words is "two hundred one million, five hundred sixty-one thousand, thirty-five".