87143573 has 32 divisors (see below), whose sum is σ = 105283584. Its totient is φ = 71280000.

The previous prime is 87143561. The next prime is 87143587. The reversal of 87143573 is 37534178.

It is not a de Polignac number, because 87143573 - 2¹⁶ = 87078037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87143533) 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 31 ways as a sum of consecutive naturals, for example, 321428 + ... + 321698.

It is an arithmetic number, because the mean of its divisors is an integer number (3290112).

Almost surely, 2^87143573 is an apocalyptic number.

It is an amenable number.

87143573 is a deficient number, since it is larger than the sum of its proper divisors (18140011).

87143573 is a wasteful number, since it uses less digits than its factorization.

87143573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its digits is 70560, while the sum is 38.

The square root of 87143573 is about 9335.0722011134. The cubic root of 87143573 is about 443.3483748767.

It can be divided in two parts, 871 and 43573, that added together give a palindrome (44444).

The spelling of 87143573 in words is "eighty-seven million, one hundred forty-three thousand, five hundred seventy-three".