1972559 has 4 divisors (see below), whose sum is σ = 1975680. Its totient is φ = 1969440.

The previous prime is 1972541. The next prime is 1972567. The reversal of 1972559 is 9552791.

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

It is a cyclic number.

It is not a de Polignac number, because 1972559 - 2¹⁶ = 1907023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972589) 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, 239 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (493920).

2^1972559 is an apocalyptic number.

1972559 is a deficient number, since it is larger than the sum of its proper divisors (3121).

1972559 is an equidigital number, since it uses as much as digits as its factorization.

1972559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its digits is 28350, while the sum is 38.

The square root of 1972559 is about 1404.4781949180. The cubic root of 1972559 is about 125.4132244591.

The spelling of 1972559 in words is "one million, nine hundred seventy-two thousand, five hundred fifty-nine".