161063601 has 4 divisors (see below), whose sum is σ = 214751472. Its totient is φ = 107375732.

The previous prime is 161063587. The next prime is 161063611. The reversal of 161063601 is 106360161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161063601 - 2⁷ = 161063473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161063611) 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 3 ways as a sum of consecutive naturals, for example, 26843931 + ... + 26843936.

It is an arithmetic number, because the mean of its divisors is an integer number (53687868).

Almost surely, 2^161063601 is an apocalyptic number.

It is an amenable number.

161063601 is a deficient number, since it is larger than the sum of its proper divisors (53687871).

161063601 is an equidigital number, since it uses as much as digits as its factorization.

161063601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53687870.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 161063601 is about 12691.0835234821. The cubic root of 161063601 is about 544.0838081393.

The spelling of 161063601 in words is "one hundred sixty-one million, sixty-three thousand, six hundred one".