16005497 has 8 divisors (see below), whose sum is σ = 16518600. Its totient is φ = 15496704.

The previous prime is 16005481. The next prime is 16005499. The reversal of 16005497 is 79450061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9369721 + 6635776 = 3061^2 + 2576^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16005497 - 2⁴ = 16005481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16005499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7529 + ... + 9417.

It is an arithmetic number, because the mean of its divisors is an integer number (2064825).

Almost surely, 2^16005497 is an apocalyptic number.

It is an amenable number.

16005497 is a deficient number, since it is larger than the sum of its proper divisors (513103).

16005497 is a wasteful number, since it uses less digits than its factorization.

16005497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 16005497 is about 4000.6870659925. The cubic root of 16005497 is about 252.0130641165.

The spelling of 16005497 in words is "sixteen million, five thousand, four hundred ninety-seven".