561102523 has 2 divisors, whose sum is σ = 561102524. Its totient is φ = 561102522.

The previous prime is 561102499. The next prime is 561102533. The reversal of 561102523 is 325201165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561102523 - 2²¹ = 559005371 is a prime.

It is not a weakly prime, because it can be changed into another prime (561102533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280551261 + 280551262.

It is an arithmetic number, because the mean of its divisors is an integer number (280551262).

Almost surely, 2^561102523 is an apocalyptic number.

561102523 is a deficient number, since it is larger than the sum of its proper divisors (1).

561102523 is an equidigital number, since it uses as much as digits as its factorization.

561102523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 561102523 is about 23687.6027280094. The cubic root of 561102523 is about 824.7976353369.

Adding to 561102523 its reverse (325201165), we get a palindrome (886303688).

The spelling of 561102523 in words is "five hundred sixty-one million, one hundred two thousand, five hundred twenty-three".