15220043 has 4 divisors (see below), whose sum is σ = 15881808. Its totient is φ = 14558280.

The previous prime is 15220031. The next prime is 15220067. The reversal of 15220043 is 34002251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15220043 - 2¹⁴ = 15203659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330848 + ... + 330893.

It is an arithmetic number, because the mean of its divisors is an integer number (3970452).

Almost surely, 2^15220043 is an apocalyptic number.

15220043 is a deficient number, since it is larger than the sum of its proper divisors (661765).

15220043 is an equidigital number, since it uses as much as digits as its factorization.

15220043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661764.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 15220043 is about 3901.2873516315. The cubic root of 15220043 is about 247.8212975112.

Adding to 15220043 its reverse (34002251), we get a palindrome (49222294).

The spelling of 15220043 in words is "fifteen million, two hundred twenty thousand, forty-three".