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12572011 = 72717293
BaseRepresentation
bin101111111101…
…010101101011
3212122201120001
4233331111223
511204301021
61125243431
7211601044
oct57752553
925581501
1012572011
1171075a1
124263577
1327b247a
1419538cb
151185091
hexbfd56b

12572011 has 4 divisors (see below), whose sum is σ = 12590032. Its totient is φ = 12553992.

The previous prime is 12572003. The next prime is 12572029. The reversal of 12572011 is 11027521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11027521 = 23714651.

It is a cyclic number.

It is not a de Polignac number, because 12572011 - 23 = 12572003 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 12572011.

It is not an unprimeable number, because it can be changed into a prime (12572311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7920 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (3147508).

Almost surely, 212572011 is an apocalyptic number.

12572011 is a deficient number, since it is larger than the sum of its proper divisors (18021).

12572011 is an equidigital number, since it uses as much as digits as its factorization.

12572011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18020.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 12572011 is about 3545.7031742660. The cubic root of 12572011 is about 232.5242492147.

Adding to 12572011 its reverse (11027521), we get a palindrome (23599532).

The spelling of 12572011 in words is "twelve million, five hundred seventy-two thousand, eleven".

Divisors: 1 727 17293 12572011