561335245 has 4 divisors (see below), whose sum is σ = 673602300. Its totient is φ = 449068192.

The previous prime is 561335239. The next prime is 561335249. The reversal of 561335245 is 542533165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133217764 + 428117481 = 11542^2 + 20691^2 .

It is a cyclic number.

It is not a de Polignac number, because 561335245 - 2¹¹ = 561333197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561335245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561335249) 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, 56133520 + ... + 56133529.

It is an arithmetic number, because the mean of its divisors is an integer number (168400575).

Almost surely, 2^561335245 is an apocalyptic number.

It is an amenable number.

561335245 is a deficient number, since it is larger than the sum of its proper divisors (112267055).

561335245 is a wasteful number, since it uses less digits than its factorization.

561335245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112267054.

The product of its digits is 54000, while the sum is 34.

The square root of 561335245 is about 23692.5145351860. The cubic root of 561335245 is about 824.9116501655.

The spelling of 561335245 in words is "five hundred sixty-one million, three hundred thirty-five thousand, two hundred forty-five".