1972497 has 4 divisors (see below), whose sum is σ = 2630000. Its totient is φ = 1314996.

The previous prime is 1972483. The next prime is 1972511. The reversal of 1972497 is 7942791.

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.

It is an interprime number because it is at equal distance from previous prime (1972483) and next prime (1972511).

It is not a de Polignac number, because 1972497 - 2¹² = 1968401 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972417) 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, 328747 + ... + 328752.

It is an arithmetic number, because the mean of its divisors is an integer number (657500).

2^1972497 is an apocalyptic number.

It is an amenable number.

1972497 is a deficient number, since it is larger than the sum of its proper divisors (657503).

1972497 is an equidigital number, since it uses as much as digits as its factorization.

1972497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657502.

The product of its digits is 31752, while the sum is 39.

The square root of 1972497 is about 1404.4561224901. The cubic root of 1972497 is about 125.4119104804.

The spelling of 1972497 in words is "one million, nine hundred seventy-two thousand, four hundred ninety-seven".