127652009 has 2 divisors, whose sum is σ = 127652010. Its totient is φ = 127652008.

The previous prime is 127651999. The next prime is 127652011. The reversal of 127652009 is 900256721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118483225 + 9168784 = 10885^2 + 3028^2 .

It is a cyclic number.

It is not a de Polignac number, because 127652009 - 2¹² = 127647913 is a prime.

Together with 127652011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127652039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63826004 + 63826005.

It is an arithmetic number, because the mean of its divisors is an integer number (63826005).

Almost surely, 2^127652009 is an apocalyptic number.

It is an amenable number.

127652009 is a deficient number, since it is larger than the sum of its proper divisors (1).

127652009 is an equidigital number, since it uses as much as digits as its factorization.

127652009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 127652009 is about 11298.3188572460. The cubic root of 127652009 is about 503.5112958805.

The spelling of 127652009 in words is "one hundred twenty-seven million, six hundred fifty-two thousand, nine".