855757013 has 2 divisors, whose sum is σ = 855757014. Its totient is φ = 855757012.

The previous prime is 855756991. The next prime is 855757051. The reversal of 855757013 is 310757558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832784164 + 22972849 = 28858^2 + 4793^2 .

It is a cyclic number.

It is not a de Polignac number, because 855757013 - 2¹⁶ = 855691477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855757313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427878506 + 427878507.

It is an arithmetic number, because the mean of its divisors is an integer number (427878507).

Almost surely, 2^855757013 is an apocalyptic number.

It is an amenable number.

855757013 is a deficient number, since it is larger than the sum of its proper divisors (1).

855757013 is an equidigital number, since it uses as much as digits as its factorization.

855757013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147000, while the sum is 41.

The square root of 855757013 is about 29253.3248195825. The cubic root of 855757013 is about 949.4020292307.

The spelling of 855757013 in words is "eight hundred fifty-five million, seven hundred fifty-seven thousand, thirteen".