161026001 has 4 divisors (see below), whose sum is σ = 161055552. Its totient is φ = 160996452.

The previous prime is 161025973. The next prime is 161026003. The reversal of 161026001 is 100620161.

It is a happy number.

161026001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-161026001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161026003) 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, 3965 + ... + 18378.

It is an arithmetic number, because the mean of its divisors is an integer number (40263888).

Almost surely, 2^161026001 is an apocalyptic number.

It is an amenable number.

161026001 is a deficient number, since it is larger than the sum of its proper divisors (29551).

161026001 is an equidigital number, since it uses as much as digits as its factorization.

161026001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29550.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 161026001 is about 12689.6020820198. The cubic root of 161026001 is about 544.0414663911.

Adding to 161026001 its reverse (100620161), we get a palindrome (261646162).

The spelling of 161026001 in words is "one hundred sixty-one million, twenty-six thousand, one".