22453381 has 2 divisors, whose sum is σ = 22453382. Its totient is φ = 22453380.

The previous prime is 22453367. The next prime is 22453391. The reversal of 22453381 is 18335422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20930625 + 1522756 = 4575^2 + 1234^2 .

It is a cyclic number.

It is not a de Polignac number, because 22453381 - 2⁵ = 22453349 is a prime.

It is a super-2 number, since 2×22453381² = 1008308636662322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22453351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226690 + 11226691.

It is an arithmetic number, because the mean of its divisors is an integer number (11226691).

Almost surely, 2^22453381 is an apocalyptic number.

It is an amenable number.

22453381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22453381 is an equidigital number, since it uses as much as digits as its factorization.

22453381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 22453381 is about 4738.4998681017. The cubic root of 22453381 is about 282.1156953640.

The spelling of 22453381 in words is "twenty-two million, four hundred fifty-three thousand, three hundred eighty-one".