22653421 has 4 divisors (see below), whose sum is σ = 25889632. Its totient is φ = 19417212.

The previous prime is 22653403. The next prime is 22653427. The reversal of 22653421 is 12435622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12435622 = 2 ⋅6217811.

It is a cyclic number.

It is not a de Polignac number, because 22653421 - 2¹¹ = 22651373 is a prime.

It is a super-5 number, since 5×22653421⁵ (a number of 38 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22653427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618095 + ... + 1618108.

It is an arithmetic number, because the mean of its divisors is an integer number (6472408).

Almost surely, 2^22653421 is an apocalyptic number.

It is an amenable number.

22653421 is a deficient number, since it is larger than the sum of its proper divisors (3236211).

22653421 is an equidigital number, since it uses as much as digits as its factorization.

22653421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236210.

The product of its digits is 2880, while the sum is 25.

The square root of 22653421 is about 4759.5610091688. The cubic root of 22653421 is about 282.9510210034.

The spelling of 22653421 in words is "twenty-two million, six hundred fifty-three thousand, four hundred twenty-one".