577240421 has 2 divisors, whose sum is σ = 577240422. Its totient is φ = 577240420.

The previous prime is 577240409. The next prime is 577240427. The reversal of 577240421 is 124042775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409252900 + 167987521 = 20230^2 + 12961^2 .

It is a cyclic number.

It is not a de Polignac number, because 577240421 - 2¹⁸ = 576978277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (577240427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288620210 + 288620211.

It is an arithmetic number, because the mean of its divisors is an integer number (288620211).

Almost surely, 2^577240421 is an apocalyptic number.

It is an amenable number.

577240421 is a deficient number, since it is larger than the sum of its proper divisors (1).

577240421 is an equidigital number, since it uses as much as digits as its factorization.

577240421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 577240421 is about 24025.8282063283. The cubic root of 577240421 is about 832.6303648046.

The spelling of 577240421 in words is "five hundred seventy-seven million, two hundred forty thousand, four hundred twenty-one".