17997453 has 24 divisors (see below), whose sum is σ = 27046656. Its totient is φ = 11520000.

The previous prime is 17997451. The next prime is 17997457. The reversal of 17997453 is 35479971.

It is not a de Polignac number, because 17997453 - 2¹ = 17997451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17997399 and 17997408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17997451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69901 + ... + 70157.

It is an arithmetic number, because the mean of its divisors is an integer number (1126944).

Almost surely, 2^17997453 is an apocalyptic number.

It is an amenable number.

17997453 is a deficient number, since it is larger than the sum of its proper divisors (9049203).

17997453 is a wasteful number, since it uses less digits than its factorization.

17997453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 542 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 17997453 is about 4242.3405096715. The cubic root of 17997453 is about 262.0617776742.

The spelling of 17997453 in words is "seventeen million, nine hundred ninety-seven thousand, four hundred fifty-three".