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13715057 = 29617753
BaseRepresentation
bin110100010100…
…011001110001
3221210210112002
4310110121301
512002340212
61205543345
7224401406
oct64243161
927723462
1013715057
117818364
124714b55
132ac2825
141b702ad
15130dac2
hexd14671

13715057 has 8 divisors (see below), whose sum is σ = 14422440. Its totient is φ = 13023360.

The previous prime is 13715041. The next prime is 13715059. The reversal of 13715057 is 75051731.

It can be written as a sum of positive squares in 4 ways, for example, as 2719201 + 10995856 = 1649^2 + 3316^2 .

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 13715057 - 24 = 13715041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13715059) 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 7 ways as a sum of consecutive naturals, for example, 2108 + ... + 5645.

It is an arithmetic number, because the mean of its divisors is an integer number (1802805).

Almost surely, 213715057 is an apocalyptic number.

It is an amenable number.

13715057 is a deficient number, since it is larger than the sum of its proper divisors (707383).

13715057 is an equidigital number, since it uses as much as digits as its factorization.

13715057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 13715057 is about 3703.3845330994. The cubic root of 13715057 is about 239.3678793838.

Adding to 13715057 its reverse (75051731), we get a palindrome (88766788).

The spelling of 13715057 in words is "thirteen million, seven hundred fifteen thousand, fifty-seven".

Divisors: 1 29 61 1769 7753 224837 472933 13715057