161401017 has 4 divisors (see below), whose sum is σ = 215201360. Its totient is φ = 107600676.

The previous prime is 161401013. The next prime is 161401069. The reversal of 161401017 is 710104161.

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 not a de Polignac number, because 161401017 - 2² = 161401013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161400984 and 161401002.

It is not an unprimeable number, because it can be changed into a prime (161401013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26900167 + ... + 26900172.

It is an arithmetic number, because the mean of its divisors is an integer number (53800340).

Almost surely, 2^161401017 is an apocalyptic number.

It is an amenable number.

161401017 is a deficient number, since it is larger than the sum of its proper divisors (53800343).

161401017 is an equidigital number, since it uses as much as digits as its factorization.

161401017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53800342.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 161401017 is about 12704.3699961864. The cubic root of 161401017 is about 544.4634812061.

Adding to 161401017 its reverse (710104161), we get a palindrome (871505178).

The spelling of 161401017 in words is "one hundred sixty-one million, four hundred one thousand, seventeen".