975525281 has 2 divisors, whose sum is σ = 975525282. Its totient is φ = 975525280.

The previous prime is 975525251. The next prime is 975525283. The reversal of 975525281 is 182525579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516880225 + 458645056 = 22735^2 + 21416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-975525281 is a prime.

It is a super-2 number, since 2×975525281² = 1903299147740257922, which contains 22 as substring.

Together with 975525283, 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 (975525283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487762640 + 487762641.

It is an arithmetic number, because the mean of its divisors is an integer number (487762641).

Almost surely, 2^975525281 is an apocalyptic number.

It is an amenable number.

975525281 is a deficient number, since it is larger than the sum of its proper divisors (1).

975525281 is an equidigital number, since it uses as much as digits as its factorization.

975525281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 44.

The square root of 975525281 is about 31233.4000870863. The cubic root of 975525281 is about 991.7742834444.

The spelling of 975525281 in words is "nine hundred seventy-five million, five hundred twenty-five thousand, two hundred eighty-one".