561349 has 4 divisors (see below), whose sum is σ = 564480. Its totient is φ = 558220.

The previous prime is 561347. The next prime is 561359. The reversal of 561349 is 943165.

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: 943165 = 5 ⋅188633.

It is a cyclic number.

It is not a de Polignac number, because 561349 - 2¹ = 561347 is a prime.

It is a super-2 number, since 2×561349² = 630225399602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1279 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2⁵⁶¹³⁴⁹ is an apocalyptic number.

It is an amenable number.

561349 is a deficient number, since it is larger than the sum of its proper divisors (3131).

561349 is a wasteful number, since it uses less digits than its factorization.

561349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130.

The product of its digits is 3240, while the sum is 28.

The square root of 561349 is about 749.2322737309. The cubic root of 561349 is about 82.4918388009.

The spelling of 561349 in words is "five hundred sixty-one thousand, three hundred forty-nine".