16475121 has 12 divisors (see below), whose sum is σ = 25628148. Its totient is φ = 10138464.

The previous prime is 16475117. The next prime is 16475131. The reversal of 16475121 is 12157461.

It is a happy number.

16475121 is a `hidden beast` number, since 1 + 647 + 5 + 12 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4260096 + 12215025 = 2064^2 + 3495^2 .

It is not a de Polignac number, because 16475121 - 2² = 16475117 is a prime.

It is a super-2 number, since 2×16475121² = 542859223929282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16475131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70290 + ... + 70523.

It is an arithmetic number, because the mean of its divisors is an integer number (2135679).

Almost surely, 2^16475121 is an apocalyptic number.

It is an amenable number.

16475121 is a deficient number, since it is larger than the sum of its proper divisors (9153027).

16475121 is a wasteful number, since it uses less digits than its factorization.

16475121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140832 (or 140829 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 16475121 is about 4058.9556538597. The cubic root of 16475121 is about 254.4541495775.

The spelling of 16475121 in words is "sixteen million, four hundred seventy-five thousand, one hundred twenty-one".