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12513061 = 111137551
BaseRepresentation
bin101111101110…
…111100100101
3212112201200201
4233232330211
511200404221
61124110501
7211234141
oct57567445
925481621
1012513061
117077280
124235431
1327916a2
14193a221
151172891
hexbeef25

12513061 has 4 divisors (see below), whose sum is σ = 13650624. Its totient is φ = 11375500.

The previous prime is 12513049. The next prime is 12513101. The reversal of 12513061 is 16031521.

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: 16031521 = 111457411.

It is a cyclic number.

It is not a de Polignac number, because 12513061 - 25 = 12513029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513461) 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, 568765 + ... + 568786.

It is an arithmetic number, because the mean of its divisors is an integer number (3412656).

Almost surely, 212513061 is an apocalyptic number.

12513061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12513061 is a deficient number, since it is larger than the sum of its proper divisors (1137563).

12513061 is a wasteful number, since it uses less digits than its factorization.

12513061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137562.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12513061 is about 3537.3805280179. The cubic root of 12513061 is about 232.1602452662.

Adding to 12513061 its reverse (16031521), we get a palindrome (28544582).

The spelling of 12513061 in words is "twelve million, five hundred thirteen thousand, sixty-one".

Divisors: 1 11 1137551 12513061