15145223 has 16 divisors (see below), whose sum is σ = 16473600. Its totient is φ = 13880160.

The previous prime is 15145217. The next prime is 15145243. The reversal of 15145223 is 32254151.

15145223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15145223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15145243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138893 + ... + 139001.

It is an arithmetic number, because the mean of its divisors is an integer number (1029600).

Almost surely, 2^15145223 is an apocalyptic number.

15145223 is a deficient number, since it is larger than the sum of its proper divisors (1328377).

15145223 is a wasteful number, since it uses less digits than its factorization.

15145223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302.

The product of its digits is 1200, while the sum is 23.

The square root of 15145223 is about 3891.6863953818. The cubic root of 15145223 is about 247.4145431595.

Adding to 15145223 its reverse (32254151), we get a palindrome (47399374).

The spelling of 15145223 in words is "fifteen million, one hundred forty-five thousand, two hundred twenty-three".