525249997 has 2 divisors, whose sum is σ = 525249998. Its totient is φ = 525249996.

The previous prime is 525249983. The next prime is 525250009. The reversal of 525249997 is 799942525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524822281 + 427716 = 22909^2 + 654^2 .

It is a cyclic number.

It is not a de Polignac number, because 525249997 - 2¹¹ = 525247949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525249947) 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, 262624998 + 262624999.

It is an arithmetic number, because the mean of its divisors is an integer number (262624999).

Almost surely, 2^525249997 is an apocalyptic number.

It is an amenable number.

525249997 is a deficient number, since it is larger than the sum of its proper divisors (1).

525249997 is an equidigital number, since it uses as much as digits as its factorization.

525249997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 525249997 is about 22918.3332072819. Note that the first 3 decimals coincide. The cubic root of 525249997 is about 806.8423510487.

The spelling of 525249997 in words is "five hundred twenty-five million, two hundred forty-nine thousand, nine hundred ninety-seven".