1617161 has 12 divisors (see below), whose sum is σ = 2002752. Its totient is φ = 1278576.

The previous prime is 1617149. The next prime is 1617211.

1617161 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-1617161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500 + ... + 1866.

It is an arithmetic number, because the mean of its divisors is an integer number (166896).

2^1617161 is an apocalyptic number.

It is an amenable number.

1617161 is a deficient number, since it is larger than the sum of its proper divisors (385591).

1617161 is a wasteful number, since it uses less digits than its factorization.

1617161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1387 counting only the distinct ones).

The product of its digits is 252, while the sum is 23.

The square root of 1617161 is about 1271.6764525617. The cubic root of 1617161 is about 117.3773822718.

It can be divided in two parts, 161 and 7161, that multiplied together give a triangular number (1152921 = T₁₅₁₈).

The spelling of 1617161 in words is "one million, six hundred seventeen thousand, one hundred sixty-one".