561203441 has 2 divisors, whose sum is σ = 561203442. Its totient is φ = 561203440.

The previous prime is 561203417. The next prime is 561203479. The reversal of 561203441 is 144302165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 560742400 + 461041 = 23680^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 561203441 - 2²⁶ = 494094577 is a prime.

It is a super-4 number, since 4×561203441⁴ (a number of 36 digits) contains 4444 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561203441.

It is not a weakly prime, because it can be changed into another prime (561203141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280601720 + 280601721.

It is an arithmetic number, because the mean of its divisors is an integer number (280601721).

Almost surely, 2^561203441 is an apocalyptic number.

It is an amenable number.

561203441 is a deficient number, since it is larger than the sum of its proper divisors (1).

561203441 is an equidigital number, since it uses as much as digits as its factorization.

561203441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 561203441 is about 23689.7328182485. The cubic root of 561203441 is about 824.8470808093.

The spelling of 561203441 in words is "five hundred sixty-one million, two hundred three thousand, four hundred forty-one".