22153401 has 6 divisors (see below), whose sum is σ = 31999370. Its totient is φ = 14768928.

The previous prime is 22153399. The next prime is 22153423. The reversal of 22153401 is 10435122.

It can be written as a sum of positive squares in only one way, i.e., 21902400 + 251001 = 4680^2 + 501^2 .

It is not a de Polignac number, because 22153401 - 2¹ = 22153399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1230736 + ... + 1230753.

Almost surely, 2^22153401 is an apocalyptic number.

It is an amenable number.

22153401 is a deficient number, since it is larger than the sum of its proper divisors (9845969).

22153401 is a wasteful number, since it uses less digits than its factorization.

22153401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461495 (or 2461492 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22153401 is about 4706.7399545758. The cubic root of 22153401 is about 280.8536913062.

Adding to 22153401 its reverse (10435122), we get a palindrome (32588523).

The spelling of 22153401 in words is "twenty-two million, one hundred fifty-three thousand, four hundred one".