16475481 has 45 divisors (see below), whose sum is σ = 27728239. Its totient is φ = 9741600.

The previous prime is 16475467. The next prime is 16475491. The reversal of 16475481 is 18457461.

It is a happy number.

The square root of 16475481 is 4059.

It is a perfect power (a square), and thus also a powerful number.

16475481 is a `hidden beast` number, since 1 + 647 + 5 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 15681600 = 891^2 + 3960^2 .

It is not a de Polignac number, because 16475481 - 2⁵ = 16475449 is a prime.

It is a super-2 number, since 2×16475481² = 542882948362722, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (16475401) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 401821 + ... + 401861.

Almost surely, 2^16475481 is an apocalyptic number.

16475481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16475481 is the 4059-th square number.

16475481 is the 2030-th centered octagonal number.

It is an amenable number.

16475481 is a deficient number, since it is larger than the sum of its proper divisors (11252758).

16475481 is an equidigital number, since it uses as much as digits as its factorization.

16475481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 55 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The cubic root of 16475481 is about 254.4560029342.

Multiplying 16475481 by its sum of digits (36), we get a square (593117316 = 24354²).

The spelling of 16475481 in words is "sixteen million, four hundred seventy-five thousand, four hundred eighty-one".