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13981253 = 111397771
BaseRepresentation
bin110101010101…
…011001000101
3222022022200012
4311111121011
512034400003
61215400005
7226560446
oct65253105
928268605
1013981253
11798a360
124823005
132b86a40
141bdd2cd
1513628d8
hexd55645

13981253 has 8 divisors (see below), whose sum is σ = 16425696. Its totient is φ = 11732400.

The previous prime is 13981243. The next prime is 13981273. The reversal of 13981253 is 35218931.

13981253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13981253 - 220 = 12932677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48743 + ... + 49028.

It is an arithmetic number, because the mean of its divisors is an integer number (2053212).

Almost surely, 213981253 is an apocalyptic number.

13981253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13981253 is a deficient number, since it is larger than the sum of its proper divisors (2444443).

13981253 is a wasteful number, since it uses less digits than its factorization.

13981253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97795.

The product of its digits is 6480, while the sum is 32.

The square root of 13981253 is about 3739.1513743094. The cubic root of 13981253 is about 240.9065999419.

The spelling of 13981253 in words is "thirteen million, nine hundred eighty-one thousand, two hundred fifty-three".

Divisors: 1 11 13 143 97771 1075481 1271023 13981253