1235523 has 4 divisors (see below), whose sum is σ = 1647368. Its totient is φ = 823680.

The previous prime is 1235503. The next prime is 1235539. The reversal of 1235523 is 3255321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1235523 - 2⁶ = 1235459 is a prime.

It is a D-number.

It is a Duffinian number.

1235523 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1235523.

It is not an unprimeable number, because it can be changed into a prime (1235503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205918 + ... + 205923.

It is an arithmetic number, because the mean of its divisors is an integer number (411842).

2^1235523 is an apocalyptic number.

1235523 is a deficient number, since it is larger than the sum of its proper divisors (411845).

1235523 is an equidigital number, since it uses as much as digits as its factorization.

1235523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411844.

The product of its digits is 900, while the sum is 21.

The square root of 1235523 is about 1111.5408224622. The cubic root of 1235523 is about 107.3042552902.

The spelling of 1235523 in words is "one million, two hundred thirty-five thousand, five hundred twenty-three".