577399561 has 4 divisors (see below), whose sum is σ = 577630224. Its totient is φ = 577168900.

The previous prime is 577399519. The next prime is 577399573. The reversal of 577399561 is 165993775.

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 a cyclic number.

It is not a de Polignac number, because 577399561 - 2¹³ = 577391369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 577399499 and 577399508.

It is not an unprimeable number, because it can be changed into a prime (577399261) 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, 111535 + ... + 116596.

It is an arithmetic number, because the mean of its divisors is an integer number (144407556).

Almost surely, 2^577399561 is an apocalyptic number.

It is an amenable number.

577399561 is a deficient number, since it is larger than the sum of its proper divisors (230663).

577399561 is a wasteful number, since it uses less digits than its factorization.

577399561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230662.

The product of its digits is 1786050, while the sum is 52.

The square root of 577399561 is about 24029.1398306306. The cubic root of 577399561 is about 832.7068740120.

The spelling of 577399561 in words is "five hundred seventy-seven million, three hundred ninety-nine thousand, five hundred sixty-one".