22548661 has 2 divisors, whose sum is σ = 22548662. Its totient is φ = 22548660.

The previous prime is 22548623. The next prime is 22548697. The reversal of 22548661 is 16684522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21446161 + 1102500 = 4631^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 22548661 - 2¹⁷ = 22417589 is a prime.

It is a super-2 number, since 2×22548661² = 1016884225785842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22549661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11274330 + 11274331.

It is an arithmetic number, because the mean of its divisors is an integer number (11274331).

Almost surely, 2^22548661 is an apocalyptic number.

It is an amenable number.

22548661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22548661 is an equidigital number, since it uses as much as digits as its factorization.

22548661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 22548661 is about 4748.5430397123. The cubic root of 22548661 is about 282.5141810304.

The spelling of 22548661 in words is "twenty-two million, five hundred forty-eight thousand, six hundred sixty-one".