275128501 has 2 divisors, whose sum is σ = 275128502. Its totient is φ = 275128500.

The previous prime is 275128429. The next prime is 275128517. The reversal of 275128501 is 105821572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183467025 + 91661476 = 13545^2 + 9574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275128501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275128571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137564250 + 137564251.

It is an arithmetic number, because the mean of its divisors is an integer number (137564251).

Almost surely, 2^275128501 is an apocalyptic number.

It is an amenable number.

275128501 is a deficient number, since it is larger than the sum of its proper divisors (1).

275128501 is an equidigital number, since it uses as much as digits as its factorization.

275128501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 275128501 is about 16586.9979502018. The cubic root of 275128501 is about 650.3969969267.

The spelling of 275128501 in words is "two hundred seventy-five million, one hundred twenty-eight thousand, five hundred one".