561120253 has 2 divisors, whose sum is σ = 561120254. Its totient is φ = 561120252.

The previous prime is 561120251. The next prime is 561120257. The reversal of 561120253 is 352021165.

561120253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421809444 + 139310809 = 20538^2 + 11803^2 .

It is a cyclic number.

It is not a de Polignac number, because 561120253 - 2¹ = 561120251 is a prime.

Together with 561120251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561120251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280560126 + 280560127.

It is an arithmetic number, because the mean of its divisors is an integer number (280560127).

Almost surely, 2^561120253 is an apocalyptic number.

It is an amenable number.

561120253 is a deficient number, since it is larger than the sum of its proper divisors (1).

561120253 is an equidigital number, since it uses as much as digits as its factorization.

561120253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 561120253 is about 23687.9769714512. The cubic root of 561120253 is about 824.8063227023.

The spelling of 561120253 in words is "five hundred sixty-one million, one hundred twenty thousand, two hundred fifty-three".