2148401 has 2 divisors, whose sum is σ = 2148402. Its totient is φ = 2148400.

The previous prime is 2148397. The next prime is 2148403. The reversal of 2148401 is 1048412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 255025 = 1376^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148401 - 2² = 2148397 is a prime.

Together with 2148403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2148403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074200 + 1074201.

It is an arithmetic number, because the mean of its divisors is an integer number (1074201).

2^2148401 is an apocalyptic number.

2148401 is the 656-th centered decagonal number.

It is an amenable number.

2148401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148401 is an equidigital number, since it uses as much as digits as its factorization.

2148401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2148401 is about 1465.7424739701. The cubic root of 2148401 is about 129.0342836987.

The spelling of 2148401 in words is "two million, one hundred forty-eight thousand, four hundred one".