161061201 has 24 divisors (see below), whose sum is σ = 266235840. Its totient is φ = 91911456.

The previous prime is 161061193. The next prime is 161061211. The reversal of 161061201 is 102160161.

It is not a de Polignac number, because 161061201 - 2³ = 161061193 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (161061211) 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 23 ways as a sum of consecutive naturals, for example, 67690 + ... + 70028.

It is an arithmetic number, because the mean of its divisors is an integer number (11093160).

Almost surely, 2^161061201 is an apocalyptic number.

It is an amenable number.

161061201 is a deficient number, since it is larger than the sum of its proper divisors (105174639).

161061201 is a wasteful number, since it uses less digits than its factorization.

161061201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445 (or 3442 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 161061201 is about 12690.9889685556. The cubic root of 161061201 is about 544.0811056714.

The spelling of 161061201 in words is "one hundred sixty-one million, sixty-one thousand, two hundred one".