525556349 has 2 divisors, whose sum is σ = 525556350. Its totient is φ = 525556348.

The previous prime is 525556307. The next prime is 525556387. The reversal of 525556349 is 943655525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461476324 + 64080025 = 21482^2 + 8005^2 .

It is a cyclic number.

It is not a de Polignac number, because 525556349 - 2²⁴ = 508779133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525546349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262778174 + 262778175.

It is an arithmetic number, because the mean of its divisors is an integer number (262778175).

Almost surely, 2^525556349 is an apocalyptic number.

It is an amenable number.

525556349 is a deficient number, since it is larger than the sum of its proper divisors (1).

525556349 is an equidigital number, since it uses as much as digits as its factorization.

525556349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810000, while the sum is 44.

The square root of 525556349 is about 22925.0157906162. The cubic root of 525556349 is about 806.9991841310. Note that the first 3 decimals are identical.

The spelling of 525556349 in words is "five hundred twenty-five million, five hundred fifty-six thousand, three hundred forty-nine".