23145535 has 32 divisors (see below), whose sum is σ = 33247872. Its totient is φ = 15137280.

The previous prime is 23145533. The next prime is 23145539. The reversal of 23145535 is 53554132.

It is not a de Polignac number, because 23145535 - 2¹ = 23145533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145533) 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 31 ways as a sum of consecutive naturals, for example, 78849 + ... + 79141.

It is an arithmetic number, because the mean of its divisors is an integer number (1038996).

Almost surely, 2^23145535 is an apocalyptic number.

23145535 is a deficient number, since it is larger than the sum of its proper divisors (10102337).

23145535 is a wasteful number, since it uses less digits than its factorization.

23145535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its digits is 9000, while the sum is 28.

The square root of 23145535 is about 4810.9806692607. The cubic root of 23145535 is about 284.9852665001.

Adding to 23145535 its reverse (53554132), we get a palindrome (76699667).

The spelling of 23145535 in words is "twenty-three million, one hundred forty-five thousand, five hundred thirty-five".