577121 has 4 divisors (see below), whose sum is σ = 586644. Its totient is φ = 567600.

The previous prime is 577111. The next prime is 577123. The reversal of 577121 is 121775.

Added to its reverse (121775) it gives a square (698896 = 836²).

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 192721 + 384400 = 439^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 577121 - 2¹⁴ = 560737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (577123) 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, 4670 + ... + 4791.

It is an arithmetic number, because the mean of its divisors is an integer number (146661).

2⁵⁷⁷¹²¹ is an apocalyptic number.

It is an amenable number.

577121 is a deficient number, since it is larger than the sum of its proper divisors (9523).

577121 is an equidigital number, since it uses as much as digits as its factorization.

577121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9522.

The product of its digits is 490, while the sum is 23.

The square root of 577121 is about 759.6848030598. The cubic root of 577121 is about 83.2572941932.

Adding to 577121 its reverse (121775), we get a palindrome (698896).

The spelling of 577121 in words is "five hundred seventy-seven thousand, one hundred twenty-one".