854571973 has 4 divisors (see below), whose sum is σ = 855481068. Its totient is φ = 853662880.

The previous prime is 854571961. The next prime is 854571983. The reversal of 854571973 is 379175458.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379175458 = 2 ⋅189587729.

It can be written as a sum of positive squares in 2 ways, for example, as 738643684 + 115928289 = 27178^2 + 10767^2 .

It is a cyclic number.

It is not a de Polignac number, because 854571973 - 2⁵ = 854571941 is a prime.

It is a super-2 number, since 2×854571973² = 1460586514074225458, 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 (854571953) 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, 453136 + ... + 455017.

It is an arithmetic number, because the mean of its divisors is an integer number (213870267).

Almost surely, 2^854571973 is an apocalyptic number.

It is an amenable number.

854571973 is a deficient number, since it is larger than the sum of its proper divisors (909095).

854571973 is an equidigital number, since it uses as much as digits as its factorization.

854571973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909094.

The product of its digits is 1058400, while the sum is 49.

The square root of 854571973 is about 29233.0630109128. The cubic root of 854571973 is about 948.9635873619.

The spelling of 854571973 in words is "eight hundred fifty-four million, five hundred seventy-one thousand, nine hundred seventy-three".