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12052251 = 321970481
BaseRepresentation
bin101101111110…
…011100011011
3211200022120200
4231332130123
511041133001
61110153243
7204304521
oct55763433
924608520
1012052251
116892042
124052823
13265ca13
14185a311
1510d1086
hexb7e71b

12052251 has 12 divisors (see below), whose sum is σ = 18325320. Its totient is φ = 7611840.

The previous prime is 12052231. The next prime is 12052259. The reversal of 12052251 is 15225021.

It is not a de Polignac number, because 12052251 - 25 = 12052219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12052259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35070 + ... + 35411.

It is an arithmetic number, because the mean of its divisors is an integer number (1527110).

Almost surely, 212052251 is an apocalyptic number.

12052251 is a deficient number, since it is larger than the sum of its proper divisors (6273069).

12052251 is a wasteful number, since it uses less digits than its factorization.

12052251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70506 (or 70503 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12052251 is about 3471.6352054903. The cubic root of 12052251 is about 229.2746588466.

Adding to 12052251 its reverse (15225021), we get a palindrome (27277272).

The spelling of 12052251 in words is "twelve million, fifty-two thousand, two hundred fifty-one".

Divisors: 1 3 9 19 57 171 70481 211443 634329 1339139 4017417 12052251