23545549 has 2 divisors, whose sum is σ = 23545550. Its totient is φ = 23545548.

The previous prime is 23545531. The next prime is 23545559. The reversal of 23545549 is 94554532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 1988100 = 4643^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 23545549 - 2¹⁹ = 23021261 is a prime.

It is a super-2 number, since 2×23545549² = 1108785755422802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23545519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11772774 + 11772775.

It is an arithmetic number, because the mean of its divisors is an integer number (11772775).

Almost surely, 2^23545549 is an apocalyptic number.

It is an amenable number.

23545549 is a deficient number, since it is larger than the sum of its proper divisors (1).

23545549 is an equidigital number, since it uses as much as digits as its factorization.

23545549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 37.

The square root of 23545549 is about 4852.3756037636. The cubic root of 23545549 is about 286.6176562749.

The spelling of 23545549 in words is "twenty-three million, five hundred forty-five thousand, five hundred forty-nine".