561341641 has 4 divisors (see below), whose sum is σ = 641533312. Its totient is φ = 481149972.

The previous prime is 561341629. The next prime is 561341647. The reversal of 561341641 is 146143165.

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.

It is a cyclic number.

It is not a de Polignac number, because 561341641 - 2¹¹ = 561339593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561341647) 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, 40095825 + ... + 40095838.

It is an arithmetic number, because the mean of its divisors is an integer number (160383328).

Almost surely, 2^561341641 is an apocalyptic number.

It is an amenable number.

561341641 is a deficient number, since it is larger than the sum of its proper divisors (80191671).

561341641 is an equidigital number, since it uses as much as digits as its factorization.

561341641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80191670.

The product of its digits is 8640, while the sum is 31.

The square root of 561341641 is about 23692.6495141426. The cubic root of 561341641 is about 824.9147832396.

It can be divided in two parts, 56134 and 1641, that added together give a palindrome (57775).

The spelling of 561341641 in words is "five hundred sixty-one million, three hundred forty-one thousand, six hundred forty-one".