561223301 has 4 divisors (see below), whose sum is σ = 561412704. Its totient is φ = 561033900.

The previous prime is 561223259. The next prime is 561223303. The reversal of 561223301 is 103322165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 103322165 = 5 ⋅20664433.

It is a cyclic number.

It is not a de Polignac number, because 561223301 - 2⁶ = 561223237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561223303) 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, 90185 + ... + 96206.

It is an arithmetic number, because the mean of its divisors is an integer number (140353176).

Almost surely, 2^561223301 is an apocalyptic number.

It is an amenable number.

561223301 is a deficient number, since it is larger than the sum of its proper divisors (189403).

561223301 is a wasteful number, since it uses less digits than its factorization.

561223301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189402.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 561223301 is about 23690.1519834720. The cubic root of 561223301 is about 824.8568106557.

Adding to 561223301 its reverse (103322165), we get a palindrome (664545466).

The spelling of 561223301 in words is "five hundred sixty-one million, two hundred twenty-three thousand, three hundred one".