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18054001 = 726072
BaseRepresentation
bin100010011011…
…1101101110001
31020222020102201
41010313231301
514110212001
61442543201
7306312400
oct104675561
936866381
1018054001
11a211269
126067b01
133981754
14257d637
1518b9501
hex1137b71

18054001 has 9 divisors (see below), whose sum is σ = 21036249. Its totient is φ = 15449364.

The previous prime is 18053999. The next prime is 18054007. The reversal of 18054001 is 10045081.

The square root of 18054001 is 4249.

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

It is not a de Polignac number, because 18054001 - 21 = 18053999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18054001.

It is not an unprimeable number, because it can be changed into a prime (18054007) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29440 + ... + 30046.

It is an arithmetic number, because the mean of its divisors is an integer number (2337361).

Almost surely, 218054001 is an apocalyptic number.

18054001 is the 4249-th square number.

18054001 is the 2125-th centered octagonal number.

It is an amenable number.

18054001 is a deficient number, since it is larger than the sum of its proper divisors (2982248).

18054001 is an frugal number, since it uses more digits than its factorization.

18054001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The cubic root of 18054001 is about 262.3359567656.

Adding to 18054001 its reverse (10045081), we get a palindrome (28099082).

The spelling of 18054001 in words is "eighteen million, fifty-four thousand, one".

Divisors: 1 7 49 607 4249 29743 368449 2579143 18054001