1201523 has 2 divisors, whose sum is σ = 1201524. Its totient is φ = 1201522.

The previous prime is 1201513. The next prime is 1201531. The reversal of 1201523 is 3251021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201523 - 2¹⁰ = 1200499 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201498 and 1201507.

It is not a weakly prime, because it can be changed into another prime (1201513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600761 + 600762.

It is an arithmetic number, because the mean of its divisors is an integer number (600762).

2^1201523 is an apocalyptic number.

1201523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201523 is an equidigital number, since it uses as much as digits as its factorization.

1201523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1201523 is about 1096.1400457971. The cubic root of 1201523 is about 106.3107942738.

Adding to 1201523 its reverse (3251021), we get a palindrome (4452544).

The spelling of 1201523 in words is "one million, two hundred one thousand, five hundred twenty-three".