1995541 has 2 divisors, whose sum is σ = 1995542. Its totient is φ = 1995540.

The previous prime is 1995533. The next prime is 1995547. The reversal of 1995541 is 1455991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 531441 = 1210^2 + 729^2 .

It is an emirp because it is prime and its reverse (1455991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1995541 - 2³ = 1995533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1995497 and 1995506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1995547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997770 + 997771.

It is an arithmetic number, because the mean of its divisors is an integer number (997771).

2^1995541 is an apocalyptic number.

It is an amenable number.

1995541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995541 is an equidigital number, since it uses as much as digits as its factorization.

1995541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 34.

The square root of 1995541 is about 1412.6361881249. The cubic root of 1995541 is about 125.8984021855.

The spelling of 1995541 in words is "one million, nine hundred ninety-five thousand, five hundred forty-one".