561240322 has 4 divisors (see below), whose sum is σ = 841860486. Its totient is φ = 280620160.

The previous prime is 561240289. The next prime is 561240331. The reversal of 561240322 is 223042165.

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

It can be written as a sum of positive squares in only one way, i.e., 435598641 + 125641681 = 20871^2 + 11209^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140310079 + ... + 140310082.

Almost surely, 2^561240322 is an apocalyptic number.

561240322 is a deficient number, since it is larger than the sum of its proper divisors (280620164).

561240322 is a wasteful number, since it uses less digits than its factorization.

561240322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280620163.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 561240322 is about 23690.5112228504. The cubic root of 561240322 is about 824.8651494315.

Adding to 561240322 its reverse (223042165), we get a palindrome (784282487).

The spelling of 561240322 in words is "five hundred sixty-one million, two hundred forty thousand, three hundred twenty-two".