2019497 has 4 divisors (see below), whose sum is σ = 2074116. Its totient is φ = 1964880.

The previous prime is 2019487. The next prime is 2019503. The reversal of 2019497 is 7949102.

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 1792921 + 226576 = 1339^2 + 476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2019497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2019467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27254 + ... + 27327.

It is an arithmetic number, because the mean of its divisors is an integer number (518529).

2^2019497 is an apocalyptic number.

It is an amenable number.

2019497 is a deficient number, since it is larger than the sum of its proper divisors (54619).

2019497 is an equidigital number, since it uses as much as digits as its factorization.

2019497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54618.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2019497 is about 1421.0900745554. The cubic root of 2019497 is about 126.4001931111.

The spelling of 2019497 in words is "two million, nineteen thousand, four hundred ninety-seven".