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13252201 = 73181537
BaseRepresentation
bin110010100011…
…011001101001
3220221021121021
4302203121221
511343032301
61152012441
7220433104
oct62433151
926837537
1013252201
117531636
124531121
13298cc51
141a8d73b
15126b8a1
hexca3669

13252201 has 4 divisors (see below), whose sum is σ = 13433812. Its totient is φ = 13070592.

The previous prime is 13252199. The next prime is 13252219. The reversal of 13252201 is 10225231.

13252201 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 an emirpimes, since its reverse is a distinct semiprime: 10225231 = 59173309.

It can be written as a sum of positive squares in 2 ways, for example, as 7706176 + 5546025 = 2776^2 + 2355^2 .

It is a cyclic number.

It is not a de Polignac number, because 13252201 - 21 = 13252199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13252601) 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, 90696 + ... + 90841.

It is an arithmetic number, because the mean of its divisors is an integer number (3358453).

Almost surely, 213252201 is an apocalyptic number.

It is an amenable number.

13252201 is a deficient number, since it is larger than the sum of its proper divisors (181611).

13252201 is an equidigital number, since it uses as much as digits as its factorization.

13252201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181610.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13252201 is about 3640.3572626873. The cubic root of 13252201 is about 236.6442763539.

Adding to 13252201 its reverse (10225231), we get a palindrome (23477432).

The spelling of 13252201 in words is "thirteen million, two hundred fifty-two thousand, two hundred one".

Divisors: 1 73 181537 13252201