1922559 has 4 divisors (see below), whose sum is σ = 2563416. Its totient is φ = 1281704.

The previous prime is 1922551. The next prime is 1922561. The reversal of 1922559 is 9552291.

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 1922559 - 2³ = 1922551 is a prime.

It is a D-number.

1922559 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922551) 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, 320424 + ... + 320429.

It is an arithmetic number, because the mean of its divisors is an integer number (640854).

2^1922559 is an apocalyptic number.

1922559 is a deficient number, since it is larger than the sum of its proper divisors (640857).

1922559 is an equidigital number, since it uses as much as digits as its factorization.

1922559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640856.

The product of its digits is 8100, while the sum is 33.

The square root of 1922559 is about 1386.5637381671. The cubic root of 1922559 is about 124.3444938355.

It can be divided in two parts, 19 and 22559, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 1922559 in words is "one million, nine hundred twenty-two thousand, five hundred fifty-nine".