561862783 has 2 divisors, whose sum is σ = 561862784. Its totient is φ = 561862782.

The previous prime is 561862771. The next prime is 561862853. The reversal of 561862783 is 387268165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561862783 - 2⁵ = 561862751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561865783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280931391 + 280931392.

It is an arithmetic number, because the mean of its divisors is an integer number (280931392).

Almost surely, 2^561862783 is an apocalyptic number.

561862783 is a deficient number, since it is larger than the sum of its proper divisors (1).

561862783 is an equidigital number, since it uses as much as digits as its factorization.

561862783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 561862783 is about 23703.6449306852. The cubic root of 561862783 is about 825.1699841963.

The spelling of 561862783 in words is "five hundred sixty-one million, eight hundred sixty-two thousand, seven hundred eighty-three".