1353531 has 4 divisors (see below), whose sum is σ = 1804712. Its totient is φ = 902352.

The previous prime is 1353487. The next prime is 1353551.

It is a happy number.

1353531 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1353531 - 2⁹ = 1353019 is a prime.

It is a super-2 number, since 2×1353531² = 3664092335922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1353498 and 1353507.

It is not an unprimeable number, because it can be changed into a prime (1353551) 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, 225586 + ... + 225591.

It is an arithmetic number, because the mean of its divisors is an integer number (451178).

2^1353531 is an apocalyptic number.

1353531 is a deficient number, since it is larger than the sum of its proper divisors (451181).

1353531 is an equidigital number, since it uses as much as digits as its factorization.

1353531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451180.

The product of its digits is 675, while the sum is 21.

The square root of 1353531 is about 1163.4135120412. The cubic root of 1353531 is about 110.6172189618.

The spelling of 1353531 in words is "one million, three hundred fifty-three thousand, five hundred thirty-one".