772001281 has 2 divisors, whose sum is σ = 772001282. Its totient is φ = 772001280.

The previous prime is 772001267. The next prime is 772001287. The reversal of 772001281 is 182100277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771950656 + 50625 = 27784^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 772001281 - 2⁵ = 772001249 is a prime.

It is a super-3 number, since 3×772001281³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (772001287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386000640 + 386000641.

It is an arithmetic number, because the mean of its divisors is an integer number (386000641).

Almost surely, 2^772001281 is an apocalyptic number.

It is an amenable number.

772001281 is a deficient number, since it is larger than the sum of its proper divisors (1).

772001281 is an equidigital number, since it uses as much as digits as its factorization.

772001281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 772001281 is about 27784.9110309895. The cubic root of 772001281 is about 917.3590300831.

The spelling of 772001281 in words is "seven hundred seventy-two million, one thousand, two hundred eighty-one".