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12564977 is a prime number
BaseRepresentation
bin101111111011…
…100111110001
3212122100220112
4233323213301
511204034402
61125151105
7211541405
oct57734761
925570815
1012564977
117102287
12425b495
1327ac1c9
141951105
151182e52
hexbfb9f1

12564977 has 2 divisors, whose sum is σ = 12564978. Its totient is φ = 12564976.

The previous prime is 12564973. The next prime is 12565009. The reversal of 12564977 is 77946521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12559936 + 5041 = 3544^2 + 71^2 .

It is a cyclic number.

It is not a de Polignac number, because 12564977 - 22 = 12564973 is a prime.

It is not a weakly prime, because it can be changed into another prime (12564971) 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 as a sum of consecutive naturals, namely, 6282488 + 6282489.

It is an arithmetic number, because the mean of its divisors is an integer number (6282489).

Almost surely, 212564977 is an apocalyptic number.

It is an amenable number.

12564977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12564977 is an equidigital number, since it uses as much as digits as its factorization.

12564977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 12564977 is about 3544.7111306847. The cubic root of 12564977 is about 232.4808755997.

The spelling of 12564977 in words is "twelve million, five hundred sixty-four thousand, nine hundred seventy-seven".