57291671509 has 2 divisors, whose sum is σ = 57291671510. Its totient is φ = 57291671508.

The previous prime is 57291671501. The next prime is 57291671519. The reversal of 57291671509 is 90517619275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45169000900 + 12122670609 = 212530^2 + 110103^2 .

It is a cyclic number.

It is not a de Polignac number, because 57291671509 - 2³ = 57291671501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57291671501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28645835754 + 28645835755.

It is an arithmetic number, because the mean of its divisors is an integer number (28645835755).

Almost surely, 2^57291671509 is an apocalyptic number.

It is an amenable number.

57291671509 is a deficient number, since it is larger than the sum of its proper divisors (1).

57291671509 is an equidigital number, since it uses as much as digits as its factorization.

57291671509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1190700, while the sum is 52.

The spelling of 57291671509 in words is "fifty-seven billion, two hundred ninety-one million, six hundred seventy-one thousand, five hundred nine".