523036861 has 2 divisors, whose sum is σ = 523036862. Its totient is φ = 523036860.

The previous prime is 523036853. The next prime is 523036919. The reversal of 523036861 is 168630325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392277636 + 130759225 = 19806^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 523036861 - 2³ = 523036853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523036361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261518430 + 261518431.

It is an arithmetic number, because the mean of its divisors is an integer number (261518431).

Almost surely, 2^523036861 is an apocalyptic number.

It is an amenable number.

523036861 is a deficient number, since it is larger than the sum of its proper divisors (1).

523036861 is an equidigital number, since it uses as much as digits as its factorization.

523036861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 523036861 is about 22869.9991473546. Note that the first 3 decimals coincide. The cubic root of 523036861 is about 805.7075481337.

The spelling of 523036861 in words is "five hundred twenty-three million, thirty-six thousand, eight hundred sixty-one".