561313 has 2 divisors, whose sum is σ = 561314. Its totient is φ = 561312.

The previous prime is 561307. The next prime is 561343. The reversal of 561313 is 313165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529984 + 31329 = 728^2 + 177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561313 is a prime.

It is equal to p₄₆₁₈₀ and since 561313 and 46180 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (561343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280656 + 280657.

It is an arithmetic number, because the mean of its divisors is an integer number (280657).

2⁵⁶¹³¹³ is an apocalyptic number.

It is an amenable number.

561313 is a deficient number, since it is larger than the sum of its proper divisors (1).

561313 is an equidigital number, since it uses as much as digits as its factorization.

561313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 19.

The square root of 561313 is about 749.2082487533. The cubic root of 561313 is about 82.4900753289.

Adding to 561313 its reverse (313165), we get a palindrome (874478).

It can be divided in two parts, 56 and 1313, that added together give a square (1369 = 37²).

The spelling of 561313 in words is "five hundred sixty-one thousand, three hundred thirteen".