577493381 has 2 divisors, whose sum is σ = 577493382. Its totient is φ = 577493380.

The previous prime is 577493377. The next prime is 577493387. The reversal of 577493381 is 183394775.

577493381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555356356 + 22137025 = 23566^2 + 4705^2 .

It is a cyclic number.

It is not a de Polignac number, because 577493381 - 2² = 577493377 is a prime.

It is a super-2 number, since 2×577493381² = 666997210197622322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (577493387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288746690 + 288746691.

It is an arithmetic number, because the mean of its divisors is an integer number (288746691).

Almost surely, 2^577493381 is an apocalyptic number.

It is an amenable number.

577493381 is a deficient number, since it is larger than the sum of its proper divisors (1).

577493381 is an equidigital number, since it uses as much as digits as its factorization.

577493381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The square root of 577493381 is about 24031.0919643698. The cubic root of 577493381 is about 832.7519729540.

The spelling of 577493381 in words is "five hundred seventy-seven million, four hundred ninety-three thousand, three hundred eighty-one".