1153523 has 4 divisors (see below), whose sum is σ = 1318320. Its totient is φ = 988728.

The previous prime is 1153517. The next prime is 1153531. The reversal of 1153523 is 3253511.

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

It is a cyclic number.

It is not a de Polignac number, because 1153523 - 2⁶ = 1153459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1153495 and 1153504.

It is not an unprimeable number, because it can be changed into a prime (1153553) 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, 82388 + ... + 82401.

It is an arithmetic number, because the mean of its divisors is an integer number (329580).

2^1153523 is an apocalyptic number.

1153523 is a deficient number, since it is larger than the sum of its proper divisors (164797).

1153523 is an equidigital number, since it uses as much as digits as its factorization.

1153523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164796.

The product of its digits is 450, while the sum is 20.

The square root of 1153523 is about 1074.0218805965. The cubic root of 1153523 is about 104.8758320588.

The spelling of 1153523 in words is "one million, one hundred fifty-three thousand, five hundred twenty-three".