13751172 has 18 divisors (see below), whose sum is σ = 34759998. Its totient is φ = 4583712.

The previous prime is 13751149. The next prime is 13751173. The reversal of 13751172 is 27115731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 617796 = 3624^2 + 786^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (13751173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190953 + ... + 191024.

It is an arithmetic number, because the mean of its divisors is an integer number (1931111).

Almost surely, 2^13751172 is an apocalyptic number.

13751172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13751172 is an abundant number, since it is smaller than the sum of its proper divisors (21008826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13751172 is a wasteful number, since it uses less digits than its factorization.

13751172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381987 (or 381982 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 13751172 is about 3708.2572726282. The cubic root of 13751172 is about 239.5777993798.

The spelling of 13751172 in words is "thirteen million, seven hundred fifty-one thousand, one hundred seventy-two".