524315261 has 2 divisors, whose sum is σ = 524315262. Its totient is φ = 524315260.

The previous prime is 524315243. The next prime is 524315263. The reversal of 524315261 is 162513425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512796025 + 11519236 = 22645^2 + 3394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-524315261 is a prime.

Together with 524315263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524315263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262157630 + 262157631.

It is an arithmetic number, because the mean of its divisors is an integer number (262157631).

Almost surely, 2^524315261 is an apocalyptic number.

It is an amenable number.

524315261 is a deficient number, since it is larger than the sum of its proper divisors (1).

524315261 is an equidigital number, since it uses as much as digits as its factorization.

524315261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 524315261 is about 22897.9313694491. The cubic root of 524315261 is about 806.3634474017.

Adding to 524315261 its reverse (162513425), we get a palindrome (686828686).

The spelling of 524315261 in words is "five hundred twenty-four million, three hundred fifteen thousand, two hundred sixty-one".