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13495121 = 293712577
BaseRepresentation
bin110011011110…
…101101010001
3221101121211022
4303132231101
511423320441
61201125225
7222464243
oct63365521
927347738
1013495121
1176880a2
124629815
132a466a3
141b14093
1512b884b
hexcdeb51

13495121 has 8 divisors (see below), whose sum is σ = 14338920. Its totient is φ = 12676608.

The previous prime is 13495099. The next prime is 13495133. The reversal of 13495121 is 12159431.

It can be written as a sum of positive squares in 4 ways, for example, as 8042896 + 5452225 = 2836^2 + 2335^2 .

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 13495121 - 26 = 13495057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13495151) 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, 5216 + ... + 7361.

It is an arithmetic number, because the mean of its divisors is an integer number (1792365).

Almost surely, 213495121 is an apocalyptic number.

It is an amenable number.

13495121 is a deficient number, since it is larger than the sum of its proper divisors (843799).

13495121 is a wasteful number, since it uses less digits than its factorization.

13495121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643.

The product of its digits is 1080, while the sum is 26.

The square root of 13495121 is about 3673.5706063720. The cubic root of 13495121 is about 238.0814694140.

The spelling of 13495121 in words is "thirteen million, four hundred ninety-five thousand, one hundred twenty-one".

Divisors: 1 29 37 1073 12577 364733 465349 13495121