1648201 has 4 divisors (see below), whose sum is σ = 1745172. Its totient is φ = 1551232.

The previous prime is 1648187. The next prime is 1648217. The reversal of 1648201 is 1028461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1382976 + 265225 = 1176^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648201 - 2⁹ = 1647689 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1648261) 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, 48460 + ... + 48493.

It is an arithmetic number, because the mean of its divisors is an integer number (436293).

2^1648201 is an apocalyptic number.

It is an amenable number.

1648201 is a deficient number, since it is larger than the sum of its proper divisors (96971).

1648201 is an equidigital number, since it uses as much as digits as its factorization.

1648201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96970.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1648201 is about 1283.8228070883. The cubic root of 1648201 is about 118.1236136377.

It can be divided in two parts, 1648 and 201, that added together give a square (1849 = 43²).

The spelling of 1648201 in words is "one million, six hundred forty-eight thousand, two hundred one".