16532401 has 2 divisors, whose sum is σ = 16532402. Its totient is φ = 16532400.

The previous prime is 16532371. The next prime is 16532441. The reversal of 16532401 is 10423561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16200625 + 331776 = 4025^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 16532401 - 2⁷ = 16532273 is a prime.

It is not a weakly prime, because it can be changed into another prime (16532441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8266200 + 8266201.

It is an arithmetic number, because the mean of its divisors is an integer number (8266201).

Almost surely, 2^16532401 is an apocalyptic number.

It is an amenable number.

16532401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16532401 is an equidigital number, since it uses as much as digits as its factorization.

16532401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16532401 is about 4066.0055336903. The cubic root of 16532401 is about 254.7487002688.

Adding to 16532401 its reverse (10423561), we get a palindrome (26955962).

The spelling of 16532401 in words is "sixteen million, five hundred thirty-two thousand, four hundred one".