23515045 has 8 divisors (see below), whose sum is σ = 28262520. Its totient is φ = 18782400.

The previous prime is 23515033. The next prime is 23515049. The reversal of 23515045 is 54051532.

It can be written as a sum of positive squares in 4 ways, for example, as 7650756 + 15864289 = 2766^2 + 3983^2 .

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

It is not a de Polignac number, because 23515045 - 2⁵ = 23515013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23515049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151 + ... + 6859.

It is an arithmetic number, because the mean of its divisors is an integer number (3532815).

Almost surely, 2^23515045 is an apocalyptic number.

It is an amenable number.

23515045 is a deficient number, since it is larger than the sum of its proper divisors (4747475).

23515045 is an equidigital number, since it uses as much as digits as its factorization.

23515045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7415.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 23515045 is about 4849.2313823945. The cubic root of 23515045 is about 286.4938287196.

Adding to 23515045 its reverse (54051532), we get a palindrome (77566577).

It can be divided in two parts, 2351 and 5045, that added together give a square (7396 = 86²).

The spelling of 23515045 in words is "twenty-three million, five hundred fifteen thousand, forty-five".