15491552 has 12 divisors (see below), whose sum is σ = 30499056. Its totient is φ = 7745760.

The previous prime is 15491551. The next prime is 15491557. The reversal of 15491552 is 25519451.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 484111 = 15491552 / (1 + 5 + 4 + 9 + 1 + 5 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15491551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242024 + ... + 242087.

It is an arithmetic number, because the mean of its divisors is an integer number (2541588).

Almost surely, 2^15491552 is an apocalyptic number.

It is an amenable number.

15491552 is a deficient number, since it is larger than the sum of its proper divisors (15007504).

15491552 is an equidigital number, since it uses as much as digits as its factorization.

15491552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484121 (or 484113 counting only the distinct ones).

The product of its digits is 9000, while the sum is 32.

The square root of 15491552 is about 3935.9308937023. The cubic root of 15491552 is about 249.2862414677.

The spelling of 15491552 in words is "fifteen million, four hundred ninety-one thousand, five hundred fifty-two".