16526401 has 4 divisors (see below), whose sum is σ = 16573572. Its totient is φ = 16479232.

The previous prime is 16526369. The next prime is 16526417. The reversal of 16526401 is 10462561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10462561 = 1553 ⋅6737.

It can be written as a sum of positive squares in 2 ways, for example, as 9641025 + 6885376 = 3105^2 + 2624^2 .

It is a cyclic number.

It is not a de Polignac number, because 16526401 - 2⁵ = 16526369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16526501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23056 + ... + 23761.

It is an arithmetic number, because the mean of its divisors is an integer number (4143393).

Almost surely, 2^16526401 is an apocalyptic number.

It is an amenable number.

16526401 is a deficient number, since it is larger than the sum of its proper divisors (47171).

16526401 is an equidigital number, since it uses as much as digits as its factorization.

16526401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47170.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 16526401 is about 4065.2676418657. The cubic root of 16526401 is about 254.7178784269.

Adding to 16526401 its reverse (10462561), we get a palindrome (26988962).

The spelling of 16526401 in words is "sixteen million, five hundred twenty-six thousand, four hundred one".