21414601 has 12 divisors (see below), whose sum is σ = 23797956. Its totient is φ = 19141920.

The previous prime is 21414571. The next prime is 21414619. The reversal of 21414601 is 10641412.

It can be written as a sum of positive squares in 2 ways, for example, as 11397376 + 10017225 = 3376^2 + 3165^2 .

It is not a de Polignac number, because 21414601 - 2⁹ = 21414089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21414641) 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 11 ways as a sum of consecutive naturals, for example, 101386 + ... + 101596.

It is an arithmetic number, because the mean of its divisors is an integer number (1983163).

Almost surely, 2^21414601 is an apocalyptic number.

It is an amenable number.

21414601 is a deficient number, since it is larger than the sum of its proper divisors (2383355).

21414601 is an equidigital number, since it uses as much as digits as its factorization.

21414601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 21414601 is about 4627.5912740863. The cubic root of 21414601 is about 277.6962375718.

The spelling of 21414601 in words is "twenty-one million, four hundred fourteen thousand, six hundred one".