1022545 has 4 divisors (see below), whose sum is σ = 1227060. Its totient is φ = 818032.

The previous prime is 1022531. The next prime is 1022573. The reversal of 1022545 is 5452201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 163216 + 859329 = 404^2 + 927^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022545 - 2⁵ = 1022513 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 102250 + ... + 102259.

It is an arithmetic number, because the mean of its divisors is an integer number (306765).

2^1022545 is an apocalyptic number.

It is an amenable number.

1022545 is a deficient number, since it is larger than the sum of its proper divisors (204515).

1022545 is an equidigital number, since it uses as much as digits as its factorization.

1022545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204514.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1022545 is about 1011.2096716310. The cubic root of 1022545 is about 100.7459221668.

Adding to 1022545 its reverse (5452201), we get a palindrome (6474746).

The spelling of 1022545 in words is "one million, twenty-two thousand, five hundred forty-five".