15432223 has 2 divisors, whose sum is σ = 15432224. Its totient is φ = 15432222.

The previous prime is 15432211. The next prime is 15432229. The reversal of 15432223 is 32223451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15432223 - 2¹⁷ = 15301151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15432194 and 15432203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15432229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7716111 + 7716112.

It is an arithmetic number, because the mean of its divisors is an integer number (7716112).

Almost surely, 2^15432223 is an apocalyptic number.

15432223 is a deficient number, since it is larger than the sum of its proper divisors (1).

15432223 is an equidigital number, since it uses as much as digits as its factorization.

15432223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 22.

The square root of 15432223 is about 3928.3868190391. The cubic root of 15432223 is about 248.9675984570.

Adding to 15432223 its reverse (32223451), we get a palindrome (47655674).

The spelling of 15432223 in words is "fifteen million, four hundred thirty-two thousand, two hundred twenty-three".