23145549 has 8 divisors (see below), whose sum is σ = 35269440. Its totient is φ = 13226016.

The previous prime is 23145547. The next prime is 23145569. The reversal of 23145549 is 94554132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23145549 - 2¹ = 23145547 is a prime.

It is a super-2 number, since 2×23145549² = 1071432877022802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551064 + ... + 551105.

It is an arithmetic number, because the mean of its divisors is an integer number (4408680).

Almost surely, 2^23145549 is an apocalyptic number.

It is an amenable number.

23145549 is a deficient number, since it is larger than the sum of its proper divisors (12123891).

23145549 is a wasteful number, since it uses less digits than its factorization.

23145549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102179.

The product of its digits is 21600, while the sum is 33.

The square root of 23145549 is about 4810.9821242653. The cubic root of 23145549 is about 284.9853239596.

The spelling of 23145549 in words is "twenty-three million, one hundred forty-five thousand, five hundred forty-nine".