15242215441 has 4 divisors (see below), whose sum is σ = 15242539492. Its totient is φ = 15241891392.

The previous prime is 15242215427. The next prime is 15242215447. The reversal of 15242215441 is 14451224251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14451224251 = 109 ⋅132580039.

It can be written as a sum of positive squares in 2 ways, for example, as 595164816 + 14647050625 = 24396^2 + 121025^2 .

It is a cyclic number.

It is not a de Polignac number, because 15242215441 - 2⁹ = 15242214929 is a prime.

It is a super-3 number, since 3×15242215441³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15242215447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76380 + ... + 190573.

It is an arithmetic number, because the mean of its divisors is an integer number (3810634873).

Almost surely, 2^15242215441 is an apocalyptic number.

It is an amenable number.

15242215441 is a deficient number, since it is larger than the sum of its proper divisors (324051).

15242215441 is an equidigital number, since it uses as much as digits as its factorization.

15242215441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324050.

The product of its digits is 12800, while the sum is 31.

Adding to 15242215441 its reverse (14451224251), we get a palindrome (29693439692).

The spelling of 15242215441 in words is "fifteen billion, two hundred forty-two million, two hundred fifteen thousand, four hundred forty-one".