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13157953 = 97135649
BaseRepresentation
bin110010001100…
…011001000001
3220202111022121
4302030121001
511332023303
61150004241
7216561244
oct62143101
926674277
1013157953
117477846
1244a6681
132959093
141a6725b
15124d9bd
hexc8c641

13157953 has 4 divisors (see below), whose sum is σ = 13293700. Its totient is φ = 13022208.

The previous prime is 13157951. The next prime is 13157959. The reversal of 13157953 is 35975131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35975131 = 61358687.

It can be written as a sum of positive squares in 2 ways, for example, as 10575504 + 2582449 = 3252^2 + 1607^2 .

It is a cyclic number.

It is not a de Polignac number, because 13157953 - 21 = 13157951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13157951) 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, 67728 + ... + 67921.

It is an arithmetic number, because the mean of its divisors is an integer number (3323425).

Almost surely, 213157953 is an apocalyptic number.

It is an amenable number.

13157953 is a deficient number, since it is larger than the sum of its proper divisors (135747).

13157953 is an equidigital number, since it uses as much as digits as its factorization.

13157953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135746.

The product of its digits is 14175, while the sum is 34.

The square root of 13157953 is about 3627.3892815633. The cubic root of 13157953 is about 236.0819463103.

The spelling of 13157953 in words is "thirteen million, one hundred fifty-seven thousand, nine hundred fifty-three".

Divisors: 1 97 135649 13157953