17997245 has 16 divisors (see below), whose sum is σ = 24809088. Its totient is φ = 12277440.

The previous prime is 17997233. The next prime is 17997251. The reversal of 17997245 is 54279971.

It is not a de Polignac number, because 17997245 - 2⁴ = 17997229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17997196 and 17997205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6167 + ... + 8603.

It is an arithmetic number, because the mean of its divisors is an integer number (1550568).

Almost surely, 2^17997245 is an apocalyptic number.

It is an amenable number.

17997245 is a deficient number, since it is larger than the sum of its proper divisors (6811843).

17997245 is a wasteful number, since it uses less digits than its factorization.

17997245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660.

The product of its digits is 158760, while the sum is 44.

The square root of 17997245 is about 4242.3159948311. The cubic root of 17997245 is about 262.0607681043.

The spelling of 17997245 in words is "seventeen million, nine hundred ninety-seven thousand, two hundred forty-five".