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13135157 = 71876451
BaseRepresentation
bin110010000110…
…110100110101
3220201100001022
4302012310311
511330311112
61145310525
7216434630
oct62066465
926640038
1013135157
117461702
124495445
13294b8a9
141a5cc17
151246d72
hexc86d35

13135157 has 4 divisors (see below), whose sum is σ = 15011616. Its totient is φ = 11258700.

The previous prime is 13135153. The next prime is 13135163. The reversal of 13135157 is 75153131.

13135157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13135157 - 22 = 13135153 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 (13135153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938219 + ... + 938232.

It is an arithmetic number, because the mean of its divisors is an integer number (3752904).

Almost surely, 213135157 is an apocalyptic number.

It is an amenable number.

13135157 is a deficient number, since it is larger than the sum of its proper divisors (1876459).

13135157 is an equidigital number, since it uses as much as digits as its factorization.

13135157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876458.

The product of its digits is 1575, while the sum is 26.

The square root of 13135157 is about 3624.2457146281. The cubic root of 13135157 is about 235.9455310951.

Adding to 13135157 its reverse (75153131), we get a palindrome (88288288).

The spelling of 13135157 in words is "thirteen million, one hundred thirty-five thousand, one hundred fifty-seven".

Divisors: 1 7 1876451 13135157