857773141 has 4 divisors (see below), whose sum is σ = 869523532. Its totient is φ = 846022752.

The previous prime is 857773139. The next prime is 857773157. The reversal of 857773141 is 141377758.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158382225 + 699390916 = 12585^2 + 26446^2 .

It is a cyclic number.

It is not a de Polignac number, because 857773141 - 2¹ = 857773139 is a prime.

It is a super-2 number, since 2×857773141² = 1471549522842011762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857773181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5875086 + ... + 5875231.

It is an arithmetic number, because the mean of its divisors is an integer number (217380883).

Almost surely, 2^857773141 is an apocalyptic number.

It is an amenable number.

857773141 is a deficient number, since it is larger than the sum of its proper divisors (11750391).

857773141 is a wasteful number, since it uses less digits than its factorization.

857773141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11750390.

The product of its digits is 164640, while the sum is 43.

The square root of 857773141 is about 29287.7643564680. The cubic root of 857773141 is about 950.1470283979.

It can be divided in two parts, 8577 and 73141, that added together give a palindrome (81718).

The spelling of 857773141 in words is "eight hundred fifty-seven million, seven hundred seventy-three thousand, one hundred forty-one".