1572009 has 8 divisors (see below), whose sum is σ = 2140800. Its totient is φ = 1025616.

The previous prime is 1571989. The next prime is 1572017. The reversal of 1572009 is 9002751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1572009 - 2⁷ = 1571881 is a prime.

It is a Curzon number.

1572009 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1572009.

It is not an unprimeable number, because it can be changed into a prime (1572029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5434 + ... + 5715.

It is an arithmetic number, because the mean of its divisors is an integer number (267600).

2^1572009 is an apocalyptic number.

It is an amenable number.

1572009 is a deficient number, since it is larger than the sum of its proper divisors (568791).

1572009 is a wasteful number, since it uses less digits than its factorization.

1572009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11199.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 1572009 is about 1253.7978305931. The cubic root of 1572009 is about 116.2746415563.

The spelling of 1572009 in words is "one million, five hundred seventy-two thousand, nine".