1723541 has 2 divisors, whose sum is σ = 1723542. Its totient is φ = 1723540.

The previous prime is 1723523. The next prime is 1723573. The reversal of 1723541 is 1453271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 448900 = 1129^2 + 670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1723541 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 (1725541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861770 + 861771.

It is an arithmetic number, because the mean of its divisors is an integer number (861771).

2^1723541 is an apocalyptic number.

It is an amenable number.

1723541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723541 is an equidigital number, since it uses as much as digits as its factorization.

1723541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 1723541 is about 1312.8370043535. The cubic root of 1723541 is about 119.8966934976.

The spelling of 1723541 in words is "one million, seven hundred twenty-three thousand, five hundred forty-one".