23127505 has 8 divisors (see below), whose sum is σ = 27914472. Its totient is φ = 18394368.

The previous prime is 23127493. The next prime is 23127509. The reversal of 23127505 is 50572132.

It can be written as a sum of positive squares in 4 ways, for example, as 8473921 + 14653584 = 2911^2 + 3828^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23127505 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23127505.

It is not an unprimeable number, because it can be changed into a prime (23127509) 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, 12504 + ... + 14233.

It is an arithmetic number, because the mean of its divisors is an integer number (3489309).

Almost surely, 2^23127505 is an apocalyptic number.

It is an amenable number.

23127505 is a deficient number, since it is larger than the sum of its proper divisors (4786967).

23127505 is a wasteful number, since it uses less digits than its factorization.

23127505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26915.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 23127505 is about 4809.1064658624. The cubic root of 23127505 is about 284.9112476285.

Adding to 23127505 its reverse (50572132), we get a palindrome (73699637).

It can be divided in two parts, 23127 and 505, that added together give a palindrome (23632).

The spelling of 23127505 in words is "twenty-three million, one hundred twenty-seven thousand, five hundred five".