22626481 has 2 divisors, whose sum is σ = 22626482. Its totient is φ = 22626480.

The previous prime is 22626479. The next prime is 22626521. The reversal of 22626481 is 18462622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 3964081 = 4320^2 + 1991^2 .

It is a cyclic number.

It is not a de Polignac number, because 22626481 - 2¹ = 22626479 is a prime.

It is a super-2 number, since 2×22626481² = 1023915284886722, which contains 22 as substring.

Together with 22626479, it forms a pair of twin primes.

It is equal to p_1426189 and since 22626481 and 1426189 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22626431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11313240 + 11313241.

It is an arithmetic number, because the mean of its divisors is an integer number (11313241).

Almost surely, 2^22626481 is an apocalyptic number.

It is an amenable number.

22626481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22626481 is an equidigital number, since it uses as much as digits as its factorization.

22626481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 22626481 is about 4756.7300743263. The cubic root of 22626481 is about 282.8388124293.

The spelling of 22626481 in words is "twenty-two million, six hundred twenty-six thousand, four hundred eighty-one".