1790561 has 2 divisors, whose sum is σ = 1790562. Its totient is φ = 1790560.

The previous prime is 1790557. The next prime is 1790587. The reversal of 1790561 is 1650971.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 398161 = 1180^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790561 - 2² = 1790557 is a prime.

It is a super-2 number, since 2×1790561² = 6412217389442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1790501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895280 + 895281.

It is an arithmetic number, because the mean of its divisors is an integer number (895281).

2^1790561 is an apocalyptic number.

It is an amenable number.

1790561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790561 is an equidigital number, since it uses as much as digits as its factorization.

1790561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 1790561 is about 1338.1184551451. The cubic root of 1790561 is about 121.4310378804.

The spelling of 1790561 in words is "one million, seven hundred ninety thousand, five hundred sixty-one".