561232523 has 4 divisors (see below), whose sum is σ = 561946440. Its totient is φ = 560518608.

The previous prime is 561232519. The next prime is 561232531. The reversal of 561232523 is 325232165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325232165 = 5 ⋅65046433.

It is a cyclic number.

It is not a de Polignac number, because 561232523 - 2² = 561232519 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561232823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355778 + ... + 357351.

It is an arithmetic number, because the mean of its divisors is an integer number (140486610).

Almost surely, 2^561232523 is an apocalyptic number.

561232523 is a deficient number, since it is larger than the sum of its proper divisors (713917).

561232523 is an equidigital number, since it uses as much as digits as its factorization.

561232523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713916.

The product of its digits is 10800, while the sum is 29.

The square root of 561232523 is about 23690.3466205119. The cubic root of 561232523 is about 824.8613286362.

Adding to 561232523 its reverse (325232165), we get a palindrome (886464688).

The spelling of 561232523 in words is "five hundred sixty-one million, two hundred thirty-two thousand, five hundred twenty-three".