857857453 has 2 divisors, whose sum is σ = 857857454. Its totient is φ = 857857452.

The previous prime is 857857447. The next prime is 857857471. The reversal of 857857453 is 354758758.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706124329 + 151733124 = 26573^2 + 12318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857857453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 857857453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857857853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428928726 + 428928727.

It is an arithmetic number, because the mean of its divisors is an integer number (428928727).

Almost surely, 2^857857453 is an apocalyptic number.

It is an amenable number.

857857453 is a deficient number, since it is larger than the sum of its proper divisors (1).

857857453 is an equidigital number, since it uses as much as digits as its factorization.

857857453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704000, while the sum is 52.

The square root of 857857453 is about 29289.2036935114. The cubic root of 857857453 is about 950.1781579075.

The spelling of 857857453 in words is "eight hundred fifty-seven million, eight hundred fifty-seven thousand, four hundred fifty-three".