15252444231 has 4 divisors (see below), whose sum is σ = 20336592312. Its totient is φ = 10168296152.

The previous prime is 15252444211. The next prime is 15252444247. The reversal of 15252444231 is 13244425251.

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 15252444231 - 2⁹ = 15252443719 is a prime.

It is a super-2 number, since 2×15252444231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15252444192 and 15252444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15252444211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542074036 + ... + 2542074041.

It is an arithmetic number, because the mean of its divisors is an integer number (5084148078).

Almost surely, 2^15252444231 is an apocalyptic number.

15252444231 is a deficient number, since it is larger than the sum of its proper divisors (5084148081).

15252444231 is an equidigital number, since it uses as much as digits as its factorization.

15252444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084148080.

The product of its digits is 38400, while the sum is 33.

Adding to 15252444231 its reverse (13244425251), we get a palindrome (28496869482).

The spelling of 15252444231 in words is "fifteen billion, two hundred fifty-two million, four hundred forty-four thousand, two hundred thirty-one".