57497733409 has 2 divisors, whose sum is σ = 57497733410. Its totient is φ = 57497733408.

The previous prime is 57497733347. The next prime is 57497733431. The reversal of 57497733409 is 90433779475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52856309025 + 4641424384 = 229905^2 + 68128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57497733409 is a prime.

It is a super-2 number, since 2×57497733409² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57497733479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28748866704 + 28748866705.

It is an arithmetic number, because the mean of its divisors is an integer number (28748866705).

Almost surely, 2^57497733409 is an apocalyptic number.

It is an amenable number.

57497733409 is a deficient number, since it is larger than the sum of its proper divisors (1).

57497733409 is an equidigital number, since it uses as much as digits as its factorization.

57497733409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20003760, while the sum is 58.

The spelling of 57497733409 in words is "fifty-seven billion, four hundred ninety-seven million, seven hundred thirty-three thousand, four hundred nine".