23645545 has 16 divisors (see below), whose sum is σ = 35376768. Its totient is φ = 14739840.

The previous prime is 23645507. The next prime is 23645549. The reversal of 23645545 is 54554632.

It is not a de Polignac number, because 23645545 - 2⁷ = 23645417 is a prime.

It is a super-2 number, since 2×23645545² = 1118223596694050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23645545.

It is not an unprimeable number, because it can be changed into a prime (23645549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30324 + ... + 31093.

It is an arithmetic number, because the mean of its divisors is an integer number (2211048).

Almost surely, 2^23645545 is an apocalyptic number.

It is an amenable number.

23645545 is a deficient number, since it is larger than the sum of its proper divisors (11731223).

23645545 is a wasteful number, since it uses less digits than its factorization.

23645545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61440.

The product of its digits is 72000, while the sum is 34.

The square root of 23645545 is about 4862.6685060777. The cubic root of 23645545 is about 287.0228303982.

The spelling of 23645545 in words is "twenty-three million, six hundred forty-five thousand, five hundred forty-five".