1023573 has 4 divisors (see below), whose sum is σ = 1364768. Its totient is φ = 682380.

The previous prime is 1023571. The next prime is 1023577. The reversal of 1023573 is 3753201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1023573 - 2¹ = 1023571 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023571) 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 in 3 ways as a sum of consecutive naturals, for example, 170593 + ... + 170598.

It is an arithmetic number, because the mean of its divisors is an integer number (341192).

2^1023573 is an apocalyptic number.

It is an amenable number.

1023573 is a deficient number, since it is larger than the sum of its proper divisors (341195).

1023573 is an equidigital number, since it uses as much as digits as its factorization.

1023573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341194.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 1023573 is about 1011.7178460421. The cubic root of 1023573 is about 100.7796719842.

Adding to 1023573 its reverse (3753201), we get a palindrome (4776774).

It can be divided in two parts, 1023 and 573, that added together give a triangular number (1596 = T₅₆).

The spelling of 1023573 in words is "one million, twenty-three thousand, five hundred seventy-three".