22609481 has 2 divisors, whose sum is σ = 22609482. Its totient is φ = 22609480.

The previous prime is 22609469. The next prime is 22609501. The reversal of 22609481 is 18490622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15405625 + 7203856 = 3925^2 + 2684^2 .

It is a cyclic number.

It is not a de Polignac number, because 22609481 - 2¹⁴ = 22593097 is a prime.

It is a super-2 number, since 2×22609481² = 1022377262178722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22609451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11304740 + 11304741.

It is an arithmetic number, because the mean of its divisors is an integer number (11304741).

Almost surely, 2^22609481 is an apocalyptic number.

It is an amenable number.

22609481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22609481 is an equidigital number, since it uses as much as digits as its factorization.

22609481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 22609481 is about 4754.9427967116. The cubic root of 22609481 is about 282.7679593948.

The spelling of 22609481 in words is "twenty-two million, six hundred nine thousand, four hundred eighty-one".