15220243 has 2 divisors, whose sum is σ = 15220244. Its totient is φ = 15220242.

The previous prime is 15220241. The next prime is 15220267. The reversal of 15220243 is 34202251.

15220243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15220243 - 2¹ = 15220241 is a prime.

Together with 15220241, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 15220243.

It is not a weakly prime, because it can be changed into another prime (15220241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7610121 + 7610122.

It is an arithmetic number, because the mean of its divisors is an integer number (7610122).

Almost surely, 2^15220243 is an apocalyptic number.

15220243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15220243 is an equidigital number, since it uses as much as digits as its factorization.

15220243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 15220243 is about 3901.3129841119. The cubic root of 15220243 is about 247.8223830106.

Adding to 15220243 its reverse (34202251), we get a palindrome (49422494).

The spelling of 15220243 in words is "fifteen million, two hundred twenty thousand, two hundred forty-three".