15505045 has 8 divisors (see below), whose sum is σ = 19585440. Its totient is φ = 11751120.

The previous prime is 15505043. The next prime is 15505079. The reversal of 15505045 is 54050551.

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

It is not a de Polignac number, because 15505045 - 2¹ = 15505043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15505043) 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, 81511 + ... + 81700.

It is an arithmetic number, because the mean of its divisors is an integer number (2448180).

Almost surely, 2^15505045 is an apocalyptic number.

It is an amenable number.

15505045 is a deficient number, since it is larger than the sum of its proper divisors (4080395).

15505045 is a wasteful number, since it uses less digits than its factorization.

15505045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163235.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 15505045 is about 3937.6446005195. The cubic root of 15505045 is about 249.3585958100.

Adding to 15505045 its reverse (54050551), we get a palindrome (69555596).

The spelling of 15505045 in words is "fifteen million, five hundred five thousand, forty-five".