Search a number
-
+
13751001 = 3211138899
BaseRepresentation
bin110100011101…
…001011011001
3221212121211100
4310131023121
512010013001
61210422013
7224611245
oct64351331
927777740
1013751001
117842370
124731909
132b05cb4
141b7d425
151319586
hexd1d2d9

13751001 has 12 divisors (see below), whose sum is σ = 21668400. Its totient is φ = 8333880.

The previous prime is 13750993. The next prime is 13751021. The reversal of 13751001 is 10015731.

It is a happy number.

It is not a de Polignac number, because 13751001 - 23 = 13750993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13751021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69351 + ... + 69548.

It is an arithmetic number, because the mean of its divisors is an integer number (1805700).

Almost surely, 213751001 is an apocalyptic number.

13751001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13751001 is a deficient number, since it is larger than the sum of its proper divisors (7917399).

13751001 is a wasteful number, since it uses less digits than its factorization.

13751001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138916 (or 138913 counting only the distinct ones).

The product of its (nonzero) digits is 105, while the sum is 18.

The square root of 13751001 is about 3708.2342159038. The cubic root of 13751001 is about 239.5768063015.

Adding to 13751001 its reverse (10015731), we get a palindrome (23766732).

The spelling of 13751001 in words is "thirteen million, seven hundred fifty-one thousand, one".

Divisors: 1 3 9 11 33 99 138899 416697 1250091 1527889 4583667 13751001