525247361 has 2 divisors, whose sum is σ = 525247362. Its totient is φ = 525247360.

The previous prime is 525247357. The next prime is 525247363. The reversal of 525247361 is 163742525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513475600 + 11771761 = 22660^2 + 3431^2 .

It is a cyclic number.

It is not a de Polignac number, because 525247361 - 2² = 525247357 is a prime.

It is a Sophie Germain prime.

Together with 525247363, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_27613934 and since 525247361 and 27613934 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (525247363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262623680 + 262623681.

It is an arithmetic number, because the mean of its divisors is an integer number (262623681).

Almost surely, 2^525247361 is an apocalyptic number.

It is an amenable number.

525247361 is a deficient number, since it is larger than the sum of its proper divisors (1).

525247361 is an equidigital number, since it uses as much as digits as its factorization.

525247361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 525247361 is about 22918.2756986646. The cubic root of 525247361 is about 806.8410013168.

Adding to 525247361 its reverse (163742525), we get a palindrome (688989886).

The spelling of 525247361 in words is "five hundred twenty-five million, two hundred forty-seven thousand, three hundred sixty-one".