1972565 has 8 divisors (see below), whose sum is σ = 2705280. Its totient is φ = 1352592.

The previous prime is 1972541. The next prime is 1972567. The reversal of 1972565 is 5652791.

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

It is a cyclic number.

It is not a de Polignac number, because 1972565 - 2¹⁶ = 1907029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 56359 = 1972565 / (1 + 9 + 7 + 2 + 5 + 6 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972567) 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 7 ways as a sum of consecutive naturals, for example, 28145 + ... + 28214.

It is an arithmetic number, because the mean of its divisors is an integer number (338160).

2^1972565 is an apocalyptic number.

It is an amenable number.

1972565 is a deficient number, since it is larger than the sum of its proper divisors (732715).

1972565 is an equidigital number, since it uses as much as digits as its factorization.

1972565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56371.

The product of its digits is 18900, while the sum is 35.

The square root of 1972565 is about 1404.4803309409. The cubic root of 1972565 is about 125.4133516169.

The spelling of 1972565 in words is "one million, nine hundred seventy-two thousand, five hundred sixty-five".