1624201 has 2 divisors, whose sum is σ = 1624202. Its totient is φ = 1624200.

The previous prime is 1624199. The next prime is 1624213. The reversal of 1624201 is 1024261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1498176 + 126025 = 1224^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1624201 - 2¹ = 1624199 is a prime.

Together with 1624199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1624241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812100 + 812101.

It is an arithmetic number, because the mean of its divisors is an integer number (812101).

2^1624201 is an apocalyptic number.

It is an amenable number.

1624201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1624201 is an equidigital number, since it uses as much as digits as its factorization.

1624201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1624201 is about 1274.4414462815. The cubic root of 1624201 is about 117.5474623407.

Adding to 1624201 its reverse (1024261), we get a palindrome (2648462).

The spelling of 1624201 in words is "one million, six hundred twenty-four thousand, two hundred one".