15530055242 has 12 divisors (see below), whose sum is σ = 25224853590. Its totient is φ = 7167717648.

The previous prime is 15530055241. The next prime is 15530055253. The reversal of 15530055242 is 24255003551.

It can be written as a sum of positive squares in 3 ways, for example, as 13156319401 + 2373735841 = 114701^2 + 48721^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15530055199 and 15530055208.

It is not an unprimeable number, because it can be changed into a prime (15530055241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22973117 + ... + 22973792.

Almost surely, 2^15530055242 is an apocalyptic number.

15530055242 is a deficient number, since it is larger than the sum of its proper divisors (9694798348).

15530055242 is a wasteful number, since it uses less digits than its factorization.

15530055242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45946937 (or 45946924 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 15530055242 its reverse (24255003551), we get a palindrome (39785058793).

The spelling of 15530055242 in words is "fifteen billion, five hundred thirty million, fifty-five thousand, two hundred forty-two".