1570561 has 4 divisors (see below), whose sum is σ = 1582000. Its totient is φ = 1559124.

The previous prime is 1570531. The next prime is 1570577. The reversal of 1570561 is 1650751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1650751 = 17 ⋅97103.

It is a cyclic number.

It is not a de Polignac number, because 1570561 - 2⁷ = 1570433 is a prime.

It is a Duffinian number.

1570561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1570501) 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, 5511 + ... + 5788.

It is an arithmetic number, because the mean of its divisors is an integer number (395500).

2^1570561 is an apocalyptic number.

It is an amenable number.

1570561 is a deficient number, since it is larger than the sum of its proper divisors (11439).

1570561 is a wasteful number, since it uses less digits than its factorization.

1570561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11438.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1570561 is about 1253.2202519908. The cubic root of 1570561 is about 116.2389298435.

The spelling of 1570561 in words is "one million, five hundred seventy thousand, five hundred sixty-one".