15505113 has 8 divisors (see below), whose sum is σ = 22263808. Its totient is φ = 9541584.

The previous prime is 15505103. The next prime is 15505123. The reversal of 15505113 is 31150551.

It is an interprime number because it is at equal distance from previous prime (15505103) and next prime (15505123).

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

It is not a de Polignac number, because 15505113 - 2¹⁰ = 15504089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15505113.

It is not an unprimeable number, because it can be changed into a prime (15505103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198745 + ... + 198822.

It is an arithmetic number, because the mean of its divisors is an integer number (2782976).

Almost surely, 2^15505113 is an apocalyptic number.

15505113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15505113 is a deficient number, since it is larger than the sum of its proper divisors (6758695).

15505113 is a wasteful number, since it uses less digits than its factorization.

15505113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397583.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 15505113 is about 3937.6532351135. The cubic root of 15505113 is about 249.3589603442.

Adding to 15505113 its reverse (31150551), we get a palindrome (46655664).

The spelling of 15505113 in words is "fifteen million, five hundred five thousand, one hundred thirteen".