15745223 has 12 divisors (see below), whose sum is σ = 17190288. Its totient is φ = 14414400.

The previous prime is 15745211. The next prime is 15745229. The reversal of 15745223 is 32254751.

It is a happy number.

It is not a de Polignac number, because 15745223 - 2⁴ = 15745207 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15745229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25211 + ... + 25827.

It is an arithmetic number, because the mean of its divisors is an integer number (1432524).

Almost surely, 2^15745223 is an apocalyptic number.

15745223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15745223 is a deficient number, since it is larger than the sum of its proper divisors (1445065).

15745223 is a wasteful number, since it uses less digits than its factorization.

15745223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 781 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 15745223 is about 3968.0250755256. The cubic root of 15745223 is about 250.6395518320.

Adding to 15745223 its reverse (32254751), we get a palindrome (47999974).

The spelling of 15745223 in words is "fifteen million, seven hundred forty-five thousand, two hundred twenty-three".