127256533 has 2 divisors, whose sum is σ = 127256534. Its totient is φ = 127256532.

The previous prime is 127256501. The next prime is 127256557. The reversal of 127256533 is 335652721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114425809 + 12830724 = 10697^2 + 3582^2 .

It is an emirp because it is prime and its reverse (335652721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127256533 - 2⁵ = 127256501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127256573) 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, 63628266 + 63628267.

It is an arithmetic number, because the mean of its divisors is an integer number (63628267).

Almost surely, 2^127256533 is an apocalyptic number.

It is an amenable number.

127256533 is a deficient number, since it is larger than the sum of its proper divisors (1).

127256533 is an equidigital number, since it uses as much as digits as its factorization.

127256533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 127256533 is about 11280.8037390959. The cubic root of 127256533 is about 502.9907854027.

The spelling of 127256533 in words is "one hundred twenty-seven million, two hundred fifty-six thousand, five hundred thirty-three".