16440552 has 24 divisors (see below), whose sum is σ = 44526690. Its totient is φ = 5480160.

The previous prime is 16440539. The next prime is 16440563. The reversal of 16440552 is 25504461.

It can be written as a sum of positive squares in only one way, i.e., 13003236 + 3437316 = 3606^2 + 1854^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×16440552³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114099 + ... + 114242.

Almost surely, 2^16440552 is an apocalyptic number.

16440552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16440552 is an abundant number, since it is smaller than the sum of its proper divisors (28086138).

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

16440552 is a wasteful number, since it uses less digits than its factorization.

16440552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228353 (or 228346 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 16440552 is about 4054.6950563513. The cubic root of 16440552 is about 254.2760550854.

The spelling of 16440552 in words is "sixteen million, four hundred forty thousand, five hundred fifty-two".