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12253412551 = 22435462957
BaseRepresentation
bin10110110100101110…
…00011110011000111
31011121221221212000111
423122113003303013
5200043333200201
65343521053451
7612436200562
oct133227036307
934557855014
1012253412551
115218806236
12245b787287
131203800593
148435454d9
154bab2ab51
hex2da5c3cc7

12253412551 has 4 divisors (see below), whose sum is σ = 12258877752. Its totient is φ = 12247947352.

The previous prime is 12253412513. The next prime is 12253412593. The reversal of 12253412551 is 15521435221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15521435221 = 40138706821.

It is a cyclic number.

It is not a de Polignac number, because 12253412551 - 217 = 12253281479 is a prime.

It is a super-2 number, since 2×122534125512 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12253413551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2729236 + ... + 2733721.

It is an arithmetic number, because the mean of its divisors is an integer number (3064719438).

Almost surely, 212253412551 is an apocalyptic number.

12253412551 is a deficient number, since it is larger than the sum of its proper divisors (5465201).

12253412551 is an equidigital number, since it uses as much as digits as its factorization.

12253412551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5465200.

The product of its digits is 12000, while the sum is 31.

Adding to 12253412551 its reverse (15521435221), we get a palindrome (27774847772).

The spelling of 12253412551 in words is "twelve billion, two hundred fifty-three million, four hundred twelve thousand, five hundred fifty-one".

Divisors: 1 2243 5462957 12253412551