15488481 has 4 divisors (see below), whose sum is σ = 20651312. Its totient is φ = 10325652.

The previous prime is 15488467. The next prime is 15488491. The reversal of 15488481 is 18488451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18488451 = 3 ⋅6162817.

It is not a de Polignac number, because 15488481 - 2¹⁰ = 15487457 is a prime.

It is a super-2 number, since 2×15488481² = 479786087374722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15488441) 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 3 ways as a sum of consecutive naturals, for example, 2581411 + ... + 2581416.

It is an arithmetic number, because the mean of its divisors is an integer number (5162828).

Almost surely, 2^15488481 is an apocalyptic number.

It is an amenable number.

15488481 is a deficient number, since it is larger than the sum of its proper divisors (5162831).

15488481 is an equidigital number, since it uses as much as digits as its factorization.

15488481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5162830.

The product of its digits is 40960, while the sum is 39.

The square root of 15488481 is about 3935.5407506466. The cubic root of 15488481 is about 249.2697677871.

The spelling of 15488481 in words is "fifteen million, four hundred eighty-eight thousand, four hundred eighty-one".