1561193 has 2 divisors, whose sum is σ = 1561194. Its totient is φ = 1561192.

The previous prime is 1561187. The next prime is 1561213. The reversal of 1561193 is 3911651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 473344 = 1043^2 + 688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1561193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1561123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780596 + 780597.

It is an arithmetic number, because the mean of its divisors is an integer number (780597).

2^1561193 is an apocalyptic number.

It is an amenable number.

1561193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1561193 is an equidigital number, since it uses as much as digits as its factorization.

1561193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 26.

The square root of 1561193 is about 1249.4770906263. The cubic root of 1561193 is about 116.0073568461.

The spelling of 1561193 in words is "one million, five hundred sixty-one thousand, one hundred ninety-three".