1975009 has 4 divisors (see below), whose sum is σ = 2091204. Its totient is φ = 1858816.

The previous prime is 1974989. The next prime is 1975019. The reversal of 1975009 is 9005791.

1975009 is nontrivially palindromic in base 16.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1030225 + 944784 = 1015^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1975009 - 2⁷ = 1974881 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1975019) 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, 58072 + ... + 58105.

It is an arithmetic number, because the mean of its divisors is an integer number (522801).

2^1975009 is an apocalyptic number.

It is an amenable number.

1975009 is a deficient number, since it is larger than the sum of its proper divisors (116195).

1975009 is a wasteful number, since it uses less digits than its factorization.

1975009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116194.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 1975009 is about 1405.3501343082. The cubic root of 1975009 is about 125.4651257840.

The spelling of 1975009 in words is "one million, nine hundred seventy-five thousand, nine".