16261297 has 8 divisors (see below), whose sum is σ = 17939880. Its totient is φ = 14643840.

The previous prime is 16261247. The next prime is 16261307. The reversal of 16261297 is 79216261.

It can be written as a sum of positive squares in 4 ways, for example, as 3272481 + 12988816 = 1809^2 + 3604^2 .

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 16261297 - 2¹¹ = 16259249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16261237) 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, 14722 + ... + 15787.

It is an arithmetic number, because the mean of its divisors is an integer number (2242485).

Almost surely, 2^16261297 is an apocalyptic number.

It is an amenable number.

16261297 is a deficient number, since it is larger than the sum of its proper divisors (1678583).

16261297 is a wasteful number, since it uses less digits than its factorization.

16261297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30563.

The product of its digits is 9072, while the sum is 34.

The square root of 16261297 is about 4032.5298510984. The cubic root of 16261297 is about 253.3485330600.

The spelling of 16261297 in words is "sixteen million, two hundred sixty-one thousand, two hundred ninety-seven".