1573535 has 4 divisors (see below), whose sum is σ = 1888248. Its totient is φ = 1258824.

The previous prime is 1573501. The next prime is 1573541. The reversal of 1573535 is 5353751.

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 1573535 - 2¹⁰ = 1572511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1573498 and 1573507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157349 + ... + 157358.

It is an arithmetic number, because the mean of its divisors is an integer number (472062).

2^1573535 is an apocalyptic number.

1573535 is a deficient number, since it is larger than the sum of its proper divisors (314713).

1573535 is an equidigital number, since it uses as much as digits as its factorization.

1573535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314712.

The product of its digits is 7875, while the sum is 29.

The square root of 1573535 is about 1254.4062340406. The cubic root of 1573535 is about 116.3122532409.

It can be divided in two parts, 15735 and 35, that multiplied together give a triangular number (550725 = T₁₀₄₉).

The spelling of 1573535 in words is "one million, five hundred seventy-three thousand, five hundred thirty-five".