109649553 has 16 divisors (see below), whose sum is σ = 160117440. Its totient is φ = 66331584.

The previous prime is 109649549. The next prime is 109649563. The reversal of 109649553 is 355946901.

It is not a de Polignac number, because 109649553 - 2² = 109649549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109649563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21526 + ... + 26127.

It is an arithmetic number, because the mean of its divisors is an integer number (10007340).

Almost surely, 2^109649553 is an apocalyptic number.

109649553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

109649553 is a deficient number, since it is larger than the sum of its proper divisors (50467887).

109649553 is a wasteful number, since it uses less digits than its factorization.

109649553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47728.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 109649553 is about 10471.3682487056. The cubic root of 109649553 is about 478.6326144770.

The spelling of 109649553 in words is "one hundred nine million, six hundred forty-nine thousand, five hundred fifty-three".