15491056 has 30 divisors (see below), whose sum is σ = 34915920. Its totient is φ = 6638688.

The previous prime is 15491053. The next prime is 15491093. The reversal of 15491056 is 65019451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15491053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9096 + ... + 10663.

It is an arithmetic number, because the mean of its divisors is an integer number (1163864).

Almost surely, 2^15491056 is an apocalyptic number.

15491056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15491056 is an abundant number, since it is smaller than the sum of its proper divisors (19424864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15491056 is a wasteful number, since it uses less digits than its factorization.

15491056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19781 (or 19768 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 15491056 is about 3935.8678839616. The cubic root of 15491056 is about 249.2835809360.

The spelling of 15491056 in words is "fifteen million, four hundred ninety-one thousand, fifty-six".