1023541 has 2 divisors, whose sum is σ = 1023542. Its totient is φ = 1023540.

The previous prime is 1023521. The next prime is 1023551. The reversal of 1023541 is 1453201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 562500 + 461041 = 750^2 + 679^2 .

It is an emirp because it is prime and its reverse (1453201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023541 - 2⁷ = 1023413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511770 + 511771.

It is an arithmetic number, because the mean of its divisors is an integer number (511771).

2^1023541 is an apocalyptic number.

It is an amenable number.

1023541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023541 is an equidigital number, since it uses as much as digits as its factorization.

1023541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1023541 is about 1011.7020312325. The cubic root of 1023541 is about 100.7786217471.

Adding to 1023541 its reverse (1453201), we get a palindrome (2476742).

The spelling of 1023541 in words is "one million, twenty-three thousand, five hundred forty-one".