571378945 has 4 divisors (see below), whose sum is σ = 685654740. Its totient is φ = 457103152.

The previous prime is 571378939. The next prime is 571378979. The reversal of 571378945 is 549873175.

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 60980481 + 510398464 = 7809^2 + 22592^2 .

It is a cyclic number.

It is not a de Polignac number, because 571378945 - 2¹⁹ = 570854657 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57137890 + ... + 57137899.

It is an arithmetic number, because the mean of its divisors is an integer number (171413685).

Almost surely, 2^571378945 is an apocalyptic number.

It is an amenable number.

571378945 is a deficient number, since it is larger than the sum of its proper divisors (114275795).

571378945 is a wasteful number, since it uses less digits than its factorization.

571378945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114275794.

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

The square root of 571378945 is about 23903.5341529239. The cubic root of 571378945 is about 829.8025102299.

The spelling of 571378945 in words is "five hundred seventy-one million, three hundred seventy-eight thousand, nine hundred forty-five".