2146520401 has 2 divisors, whose sum is σ = 2146520402. Its totient is φ = 2146520400.

The previous prime is 2146520329. The next prime is 2146520413. The reversal of 2146520401 is 1040256412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2120510401 + 26010000 = 46049^2 + 5100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146520401 - 2¹³ = 2146512209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2146520461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073260200 + 1073260201.

It is an arithmetic number, because the mean of its divisors is an integer number (1073260201).

Almost surely, 2^2146520401 is an apocalyptic number.

It is an amenable number.

2146520401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146520401 is an equidigital number, since it uses as much as digits as its factorization.

2146520401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2146520401 is about 46330.5558028392. Note that the first 3 decimals coincide. The cubic root of 2146520401 is about 1289.9662273072.

Adding to 2146520401 its reverse (1040256412), we get a palindrome (3186776813).

The spelling of 2146520401 in words is "two billion, one hundred forty-six million, five hundred twenty thousand, four hundred one".