857020753 has 2 divisors, whose sum is σ = 857020754. Its totient is φ = 857020752.

The previous prime is 857020741. The next prime is 857020777. The reversal of 857020753 is 357020758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 794563344 + 62457409 = 28188^2 + 7903^2 .

It is a cyclic number.

It is not a de Polignac number, because 857020753 - 2¹³ = 857012561 is a prime.

It is a super-3 number, since 3×857020753³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (857020793) 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, 428510376 + 428510377.

It is an arithmetic number, because the mean of its divisors is an integer number (428510377).

Almost surely, 2^857020753 is an apocalyptic number.

It is an amenable number.

857020753 is a deficient number, since it is larger than the sum of its proper divisors (1).

857020753 is an equidigital number, since it uses as much as digits as its factorization.

857020753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 857020753 is about 29274.9167889509. The cubic root of 857020753 is about 949.8691428255.

The spelling of 857020753 in words is "eight hundred fifty-seven million, twenty thousand, seven hundred fifty-three".