755776261 has 2 divisors, whose sum is σ = 755776262. Its totient is φ = 755776260.

The previous prime is 755776223. The next prime is 755776271. The reversal of 755776261 is 162677557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737122500 + 18653761 = 27150^2 + 4319^2 .

It is a cyclic number.

It is not a de Polignac number, because 755776261 - 2²³ = 747387653 is a prime.

It is a super-2 number, since 2×755776261² = 1142395513382280242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (755776201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377888130 + 377888131.

It is an arithmetic number, because the mean of its divisors is an integer number (377888131).

Almost surely, 2^755776261 is an apocalyptic number.

It is an amenable number.

755776261 is a deficient number, since it is larger than the sum of its proper divisors (1).

755776261 is an equidigital number, since it uses as much as digits as its factorization.

755776261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617400, while the sum is 46.

The square root of 755776261 is about 27491.3852142812. The cubic root of 755776261 is about 910.8868145238.

The spelling of 755776261 in words is "seven hundred fifty-five million, seven hundred seventy-six thousand, two hundred sixty-one".