57545009 has 2 divisors, whose sum is σ = 57545010. Its totient is φ = 57545008.

The previous prime is 57544987. The next prime is 57545071. The reversal of 57545009 is 90054575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56670784 + 874225 = 7528^2 + 935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57545009 is a prime.

It is a super-2 number, since 2×57545009² = 6622856121620162, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57545009.

It is not a weakly prime, because it can be changed into another prime (57505009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28772504 + 28772505.

It is an arithmetic number, because the mean of its divisors is an integer number (28772505).

Almost surely, 2^57545009 is an apocalyptic number.

It is an amenable number.

57545009 is a deficient number, since it is larger than the sum of its proper divisors (1).

57545009 is an equidigital number, since it uses as much as digits as its factorization.

57545009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 57545009 is about 7585.8426690777. The cubic root of 57545009 is about 386.0728137223.

The spelling of 57545009 in words is "fifty-seven million, five hundred forty-five thousand, nine".