522949081 has 2 divisors, whose sum is σ = 522949082. Its totient is φ = 522949080.

The previous prime is 522949079. The next prime is 522949153. The reversal of 522949081 is 180949225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 437479056 + 85470025 = 20916^2 + 9245^2 .

It is a cyclic number.

It is not a de Polignac number, because 522949081 - 2¹ = 522949079 is a prime.

It is a super-2 number, since 2×522949081² = 546951482637489122, which contains 22 as substring.

Together with 522949079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (522949051) 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, 261474540 + 261474541.

It is an arithmetic number, because the mean of its divisors is an integer number (261474541).

Almost surely, 2^522949081 is an apocalyptic number.

It is an amenable number.

522949081 is a deficient number, since it is larger than the sum of its proper divisors (1).

522949081 is an equidigital number, since it uses as much as digits as its factorization.

522949081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 522949081 is about 22868.0799587547. The cubic root of 522949081 is about 805.6624723014.

The spelling of 522949081 in words is "five hundred twenty-two million, nine hundred forty-nine thousand, eighty-one".