15252131243 has 4 divisors (see below), whose sum is σ = 15915267408. Its totient is φ = 14588995080.

The previous prime is 15252131171. The next prime is 15252131249. The reversal of 15252131243 is 34213125251.

15252131243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15252131243 - 2¹⁰ = 15252130219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15252131249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331568048 + ... + 331568093.

It is an arithmetic number, because the mean of its divisors is an integer number (3978816852).

Almost surely, 2^15252131243 is an apocalyptic number.

15252131243 is a deficient number, since it is larger than the sum of its proper divisors (663136165).

15252131243 is an equidigital number, since it uses as much as digits as its factorization.

15252131243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663136164.

The product of its digits is 7200, while the sum is 29.

Adding to 15252131243 its reverse (34213125251), we get a palindrome (49465256494).

The spelling of 15252131243 in words is "fifteen billion, two hundred fifty-two million, one hundred thirty-one thousand, two hundred forty-three".