15552145 has 8 divisors (see below), whose sum is σ = 21328704. Its totient is φ = 10664304.

The previous prime is 15552143. The next prime is 15552151. The reversal of 15552145 is 54125551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15552145 - 2¹ = 15552143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15552143) 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 7 ways as a sum of consecutive naturals, for example, 222139 + ... + 222208.

It is an arithmetic number, because the mean of its divisors is an integer number (2666088).

Almost surely, 2^15552145 is an apocalyptic number.

It is an amenable number.

15552145 is a deficient number, since it is larger than the sum of its proper divisors (5776559).

15552145 is an equidigital number, since it uses as much as digits as its factorization.

15552145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444359.

The product of its digits is 5000, while the sum is 28.

The square root of 15552145 is about 3943.6207982006. The cubic root of 15552145 is about 249.6108345152.

Adding to 15552145 its reverse (54125551), we get a palindrome (69677696).

The spelling of 15552145 in words is "fifteen million, five hundred fifty-two thousand, one hundred forty-five".