15484891 has 4 divisors (see below), whose sum is σ = 15504400. Its totient is φ = 15465384.

The previous prime is 15484879. The next prime is 15484901. The reversal of 15484891 is 19848451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15484891 - 2¹⁵ = 15452123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15484591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8511 + ... + 10168.

It is an arithmetic number, because the mean of its divisors is an integer number (3876100).

Almost surely, 2^15484891 is an apocalyptic number.

15484891 is a deficient number, since it is larger than the sum of its proper divisors (19509).

15484891 is an equidigital number, since it uses as much as digits as its factorization.

15484891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19508.

The product of its digits is 46080, while the sum is 40.

The square root of 15484891 is about 3935.0846242489. The cubic root of 15484891 is about 249.2505072881.

The spelling of 15484891 in words is "fifteen million, four hundred eighty-four thousand, eight hundred ninety-one".