1632401 has 4 divisors (see below), whose sum is σ = 1636404. Its totient is φ = 1628400.

The previous prime is 1632383. The next prime is 1632427. The reversal of 1632401 is 1042361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1042361 = 139 ⋅7499.

It can be written as a sum of positive squares in 2 ways, for example, as 602176 + 1030225 = 776^2 + 1015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1632401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1632401.

It is not an unprimeable number, because it can be changed into a prime (1632431) 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, 1310 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (409101).

2^1632401 is an apocalyptic number.

It is an amenable number.

1632401 is a deficient number, since it is larger than the sum of its proper divisors (4003).

1632401 is an equidigital number, since it uses as much as digits as its factorization.

1632401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1632401 is about 1277.6544916369. The cubic root of 1632401 is about 117.7449484928.

Adding to 1632401 its reverse (1042361), we get a palindrome (2674762).

The spelling of 1632401 in words is "one million, six hundred thirty-two thousand, four hundred one".