15505049 has 16 divisors (see below), whose sum is σ = 18137088. Its totient is φ = 12982032.

The previous prime is 15505043. The next prime is 15505079. The reversal of 15505049 is 94050551.

It is a de Polignac number, because none of the positive numbers 2^k-15505049 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 95042 + ... + 95204.

It is an arithmetic number, because the mean of its divisors is an integer number (1133568).

Almost surely, 2^15505049 is an apocalyptic number.

It is an amenable number.

15505049 is a deficient number, since it is larger than the sum of its proper divisors (2632039).

15505049 is a wasteful number, since it uses less digits than its factorization.

15505049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 15505049 is about 3937.6451084373. The cubic root of 15505049 is about 249.3586172532.

The spelling of 15505049 in words is "fifteen million, five hundred five thousand, forty-nine".