17901361 has 3 divisors (see below), whose sum is σ = 17905593. Its totient is φ = 17897130.

The previous prime is 17901349. The next prime is 17901427. The reversal of 17901361 is 16310971.

The square root of 17901361 is 4231.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 17901361 - 2¹⁵ = 17868593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17901311) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2116 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (5968531).

Almost surely, 2^17901361 is an apocalyptic number.

17901361 is the 4231-st square number.

17901361 is the 2116-th centered octagonal number.

It is an amenable number.

17901361 is a deficient number, since it is larger than the sum of its proper divisors (4232).

17901361 is an frugal number, since it uses more digits than its factorization.

17901361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8462 (or 4231 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 28.

The cubic root of 17901361 is about 261.5945450595.

The spelling of 17901361 in words is "seventeen million, nine hundred one thousand, three hundred sixty-one".