561264441 has 4 divisors (see below), whose sum is σ = 748352592. Its totient is φ = 374176292.

The previous prime is 561264439. The next prime is 561264449. The reversal of 561264441 is 144462165.

561264441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 561264441 - 2¹ = 561264439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561264449) 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, 93544071 + ... + 93544076.

It is an arithmetic number, because the mean of its divisors is an integer number (187088148).

Almost surely, 2^561264441 is an apocalyptic number.

It is an amenable number.

561264441 is a deficient number, since it is larger than the sum of its proper divisors (187088151).

561264441 is a wasteful number, since it uses less digits than its factorization.

561264441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187088150.

The product of its digits is 23040, while the sum is 33.

The square root of 561264441 is about 23691.0202608499. The cubic root of 561264441 is about 824.8769653071.

The spelling of 561264441 in words is "five hundred sixty-one million, two hundred sixty-four thousand, four hundred forty-one".