1356523 has 4 divisors (see below), whose sum is σ = 1550320. Its totient is φ = 1162728.

The previous prime is 1356503. The next prime is 1356539. The reversal of 1356523 is 3256531.

It is a happy number.

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

It is not a de Polignac number, because 1356523 - 2⁵ = 1356491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356503) 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, 96888 + ... + 96901.

It is an arithmetic number, because the mean of its divisors is an integer number (387580).

2^1356523 is an apocalyptic number.

1356523 is a deficient number, since it is larger than the sum of its proper divisors (193797).

1356523 is an equidigital number, since it uses as much as digits as its factorization.

1356523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193796.

The product of its digits is 2700, while the sum is 25.

The square root of 1356523 is about 1164.6986734774. The cubic root of 1356523 is about 110.6986659695.

The spelling of 1356523 in words is "one million, three hundred fifty-six thousand, five hundred twenty-three".