22450401 has 6 divisors (see below), whose sum is σ = 32428370. Its totient is φ = 14966928.

The previous prime is 22450397. The next prime is 22450423. The reversal of 22450401 is 10405422.

It can be written as a sum of positive squares in only one way, i.e., 21150801 + 1299600 = 4599^2 + 1140^2 .

It is not a de Polignac number, because 22450401 - 2² = 22450397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22450451) 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 5 ways as a sum of consecutive naturals, for example, 1247236 + ... + 1247253.

Almost surely, 2^22450401 is an apocalyptic number.

It is an amenable number.

22450401 is a deficient number, since it is larger than the sum of its proper divisors (9977969).

22450401 is a wasteful number, since it uses less digits than its factorization.

22450401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494495 (or 2494492 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22450401 is about 4738.1854121594. The cubic root of 22450401 is about 282.1032140668.

Adding to 22450401 its reverse (10405422), we get a palindrome (32855823).

It can be divided in two parts, 224 and 50401, that added together give a 4-th power (50625 = 15⁴).

The spelling of 22450401 in words is "twenty-two million, four hundred fifty thousand, four hundred one".