8573005381 has 4 divisors (see below), whose sum is σ = 8617425292. Its totient is φ = 8528585472.

The previous prime is 8573005373. The next prime is 8573005387. The reversal of 8573005381 is 1835003758.

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 5710220356 + 2862785025 = 75566^2 + 53505^2 .

It is a cyclic number.

It is not a de Polignac number, because 8573005381 - 2³ = 8573005373 is a prime.

It is a super-2 number, since 2×8573005381² (a number of 21 digits) 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 (8573005387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22209666 + ... + 22210051.

It is an arithmetic number, because the mean of its divisors is an integer number (2154356323).

Almost surely, 2^8573005381 is an apocalyptic number.

It is an amenable number.

8573005381 is a deficient number, since it is larger than the sum of its proper divisors (44419911).

8573005381 is a wasteful number, since it uses less digits than its factorization.

8573005381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44419910.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 8573005381 is about 92590.5253306190. The cubic root of 8573005381 is about 2046.6537023651.

The spelling of 8573005381 in words is "eight billion, five hundred seventy-three million, five thousand, three hundred eighty-one".