1087573 has 4 divisors (see below), whose sum is σ = 1122688. Its totient is φ = 1052460.

The previous prime is 1087561. The next prime is 1087589. The reversal of 1087573 is 3757801.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3757801 = 19 ⋅197779.

It is a cyclic number.

It is not a de Polignac number, because 1087573 - 2⁹ = 1087061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 35083 = 1087573 / (1 + 0 + 8 + 7 + 5 + 7 + 3).

It is an Ulam 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 (1087543) 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, 17511 + ... + 17572.

It is an arithmetic number, because the mean of its divisors is an integer number (280672).

2^1087573 is an apocalyptic number.

It is an amenable number.

1087573 is a deficient number, since it is larger than the sum of its proper divisors (35115).

1087573 is an equidigital number, since it uses as much as digits as its factorization.

1087573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35114.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1087573 is about 1042.8676809644. The cubic root of 1087573 is about 102.8378067525.

The spelling of 1087573 in words is "one million, eighty-seven thousand, five hundred seventy-three".