8557973 has 4 divisors (see below), whose sum is σ = 8654220. Its totient is φ = 8461728.

The previous prime is 8557937. The next prime is 8557981. The reversal of 8557973 is 3797558.

It is a happy number.

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 5484964 + 3073009 = 2342^2 + 1753^2 .

It is a cyclic number.

It is not a de Polignac number, because 8557973 - 2¹⁰ = 8556949 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 (8557933) 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, 47990 + ... + 48167.

It is an arithmetic number, because the mean of its divisors is an integer number (2163555).

Almost surely, 2^8557973 is an apocalyptic number.

It is an amenable number.

8557973 is a deficient number, since it is larger than the sum of its proper divisors (96247).

8557973 is an equidigital number, since it uses as much as digits as its factorization.

8557973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96246.

The product of its digits is 264600, while the sum is 44.

The square root of 8557973 is about 2925.4013399874. The cubic root of 8557973 is about 204.5456763963.

The spelling of 8557973 in words is "eight million, five hundred fifty-seven thousand, nine hundred seventy-three".