16165537 has 2 divisors, whose sum is σ = 16165538. Its totient is φ = 16165536.

The previous prime is 16165519. The next prime is 16165547. The reversal of 16165537 is 73556161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14318656 + 1846881 = 3784^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 16165537 - 2¹¹ = 16163489 is a prime.

It is a super-2 number, since 2×16165537² = 522649172996738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16165507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8082768 + 8082769.

It is an arithmetic number, because the mean of its divisors is an integer number (8082769).

Almost surely, 2^16165537 is an apocalyptic number.

It is an amenable number.

16165537 is a deficient number, since it is larger than the sum of its proper divisors (1).

16165537 is an equidigital number, since it uses as much as digits as its factorization.

16165537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 16165537 is about 4020.6388795812. The cubic root of 16165537 is about 252.8502449217.

The spelling of 16165537 in words is "sixteen million, one hundred sixty-five thousand, five hundred thirty-seven".