Search a number
-
+
13212253 = 107123479
BaseRepresentation
bin110010011001…
…101001011101
3220212020210201
4302121221131
511340243003
61151103501
7220205455
oct62315135
926766721
1013212253
11750461a
124511b91
132977a02
141a7cd65
15125eb1d
hexc99a5d

13212253 has 4 divisors (see below), whose sum is σ = 13335840. Its totient is φ = 13088668.

The previous prime is 13212229. The next prime is 13212259. The reversal of 13212253 is 35221231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35221231 = 191853749.

It is not a de Polignac number, because 13212253 - 29 = 13211741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13212253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61633 + ... + 61846.

It is an arithmetic number, because the mean of its divisors is an integer number (3333960).

Almost surely, 213212253 is an apocalyptic number.

It is an amenable number.

13212253 is a deficient number, since it is larger than the sum of its proper divisors (123587).

13212253 is a wasteful number, since it uses less digits than its factorization.

13212253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123586.

The product of its digits is 360, while the sum is 19.

The square root of 13212253 is about 3634.8662974035. The cubic root of 13212253 is about 236.4062534909.

Adding to 13212253 its reverse (35221231), we get a palindrome (48433484).

The spelling of 13212253 in words is "thirteen million, two hundred twelve thousand, two hundred fifty-three".

Divisors: 1 107 123479 13212253