16413553 has 4 divisors (see below), whose sum is σ = 17676148. Its totient is φ = 15150960.

The previous prime is 16413541. The next prime is 16413563. The reversal of 16413553 is 35531461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1912689 + 14500864 = 1383^2 + 3808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16413553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16413503) 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, 631278 + ... + 631303.

It is an arithmetic number, because the mean of its divisors is an integer number (4419037).

Almost surely, 2^16413553 is an apocalyptic number.

16413553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16413553 is a deficient number, since it is larger than the sum of its proper divisors (1262595).

16413553 is a wasteful number, since it uses less digits than its factorization.

16413553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262594.

The product of its digits is 5400, while the sum is 28.

The square root of 16413553 is about 4051.3643380965. The cubic root of 16413553 is about 254.1367864303.

The spelling of 16413553 in words is "sixteen million, four hundred thirteen thousand, five hundred fifty-three".