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561061 is a prime number
BaseRepresentation
bin10001000111110100101
31001111122001
42020332211
5120423221
620005301
74524514
oct2107645
91044561
10561061
11353596
12230831
131684b7
1410867b
15b1391
hex88fa5

561061 has 2 divisors, whose sum is σ = 561062. Its totient is φ = 561060.

The previous prime is 561059. The next prime is 561079. The reversal of 561061 is 160165.

561061 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., 516961 + 44100 = 719^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 561061 - 21 = 561059 is a prime.

Together with 561059, 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 (561091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280530 + 280531.

It is an arithmetic number, because the mean of its divisors is an integer number (280531).

2561061 is an apocalyptic number.

It is an amenable number.

561061 is a deficient number, since it is larger than the sum of its proper divisors (1).

561061 is an equidigital number, since it uses as much as digits as its factorization.

561061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 561061 is about 749.0400523337. The cubic root of 561061 is about 82.4777289134.

It can be divided in two parts, 5610 and 61, that added together give a triangular number (5671 = T106).

The spelling of 561061 in words is "five hundred sixty-one thousand, sixty-one".