1611001 has 4 divisors (see below), whose sum is σ = 1841152. Its totient is φ = 1380852.

The previous prime is 1610993. The next prime is 1611031. The reversal of 1611001 is 1001161.

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 1611001 - 2³ = 1610993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1611031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115065 + ... + 115078.

It is an arithmetic number, because the mean of its divisors is an integer number (460288).

2^1611001 is an apocalyptic number.

It is an amenable number.

1611001 is a deficient number, since it is larger than the sum of its proper divisors (230151).

1611001 is an equidigital number, since it uses as much as digits as its factorization.

1611001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230150.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1611001 is about 1269.2521420112. The cubic root of 1611001 is about 117.2281568322.

Adding to 1611001 its reverse (1001161), we get a palindrome (2612162).

It can be divided in two parts, 161 and 1001, that multiplied together give a palindrome (161161).

The spelling of 1611001 in words is "one million, six hundred eleven thousand, one".