1924561 has 2 divisors, whose sum is σ = 1924562. Its totient is φ = 1924560.

The previous prime is 1924547. The next prime is 1924579. The reversal of 1924561 is 1654291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252161 + 672400 = 1119^2 + 820^2 .

It is an emirp because it is prime and its reverse (1654291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1924561 is a prime.

It is a Chen prime.

1924561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1924501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962280 + 962281.

It is an arithmetic number, because the mean of its divisors is an integer number (962281).

2^1924561 is an apocalyptic number.

It is an amenable number.

1924561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1924561 is an equidigital number, since it uses as much as digits as its factorization.

1924561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 1924561 is about 1387.2854789120. The cubic root of 1924561 is about 124.3876396841.

It can be divided in two parts, 19245 and 61, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 1924561 in words is "one million, nine hundred twenty-four thousand, five hundred sixty-one".