1613121 has 8 divisors (see below), whose sum is σ = 2157120. Its totient is φ = 1072272.

The previous prime is 1613099. The next prime is 1613123. The reversal of 1613121 is 1213161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1613121 - 2⁶ = 1613057 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1613121.

It is not an unprimeable number, because it can be changed into a prime (1613123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 975 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (269640).

2^1613121 is an apocalyptic number.

It is an amenable number.

1613121 is a deficient number, since it is larger than the sum of its proper divisors (543999).

1613121 is a wasteful number, since it uses less digits than its factorization.

1613121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575.

The product of its digits is 36, while the sum is 15.

The square root of 1613121 is about 1270.0870048938. The cubic root of 1613121 is about 117.2795565017.

Adding to 1613121 its reverse (1213161), we get a palindrome (2826282).

The spelling of 1613121 in words is "one million, six hundred thirteen thousand, one hundred twenty-one".