1653161 has 8 divisors (see below), whose sum is σ = 1723848. Its totient is φ = 1584000.

The previous prime is 1653149. The next prime is 1653167. The reversal of 1653161 is 1613561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1936 + 1651225 = 44^2 + 1285^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1653161 - 2¹⁰ = 1652137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653167) 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 7 ways as a sum of consecutive naturals, for example, 2171 + ... + 2831.

It is an arithmetic number, because the mean of its divisors is an integer number (215481).

2^1653161 is an apocalyptic number.

It is an amenable number.

1653161 is a deficient number, since it is larger than the sum of its proper divisors (70687).

1653161 is an equidigital number, since it uses as much as digits as its factorization.

1653161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its digits is 540, while the sum is 23.

The square root of 1653161 is about 1285.7530867161. The cubic root of 1653161 is about 118.2419864144.

The spelling of 1653161 in words is "one million, six hundred fifty-three thousand, one hundred sixty-one".