1555061 has 2 divisors, whose sum is σ = 1555062. Its totient is φ = 1555060.

The previous prime is 1555051. The next prime is 1555079. The reversal of 1555061 is 1605551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1311025 + 244036 = 1145^2 + 494^2 .

It is an emirp because it is prime and its reverse (1605551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1555061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777530 + 777531.

It is an arithmetic number, because the mean of its divisors is an integer number (777531).

2^1555061 is an apocalyptic number.

It is an amenable number.

1555061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555061 is an equidigital number, since it uses as much as digits as its factorization.

1555061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1555061 is about 1247.0208498658. The cubic root of 1555061 is about 115.8552743260.

The spelling of 1555061 in words is "one million, five hundred fifty-five thousand, sixty-one".