16570481 has 2 divisors, whose sum is σ = 16570482. Its totient is φ = 16570480.

The previous prime is 16570471. The next prime is 16570501. The reversal of 16570481 is 18407561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16128256 + 442225 = 4016^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 16570481 - 2¹⁰ = 16569457 is a prime.

It is a super-2 number, since 2×16570481² = 549161681142722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16570441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8285240 + 8285241.

It is an arithmetic number, because the mean of its divisors is an integer number (8285241).

Almost surely, 2^16570481 is an apocalyptic number.

It is an amenable number.

16570481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16570481 is an equidigital number, since it uses as much as digits as its factorization.

16570481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 16570481 is about 4070.6855687955. The cubic root of 16570481 is about 254.9441425776.

The spelling of 16570481 in words is "sixteen million, five hundred seventy thousand, four hundred eighty-one".