5711945 has 4 divisors (see below), whose sum is σ = 6854340. Its totient is φ = 4569552.

The previous prime is 5711939. The next prime is 5711963. The reversal of 5711945 is 5491175.

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 1901641 + 3810304 = 1379^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 5711945 - 2¹⁶ = 5646409 is a prime.

It is a Curzon number.

It is a congruent 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, 571190 + ... + 571199.

It is an arithmetic number, because the mean of its divisors is an integer number (1713585).

Almost surely, 2^5711945 is an apocalyptic number.

It is an amenable number.

5711945 is a deficient number, since it is larger than the sum of its proper divisors (1142395).

5711945 is a wasteful number, since it uses less digits than its factorization.

5711945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142394.

The product of its digits is 6300, while the sum is 32.

The square root of 5711945 is about 2389.9675730018. The cubic root of 5711945 is about 178.7562926697.

The spelling of 5711945 in words is "five million, seven hundred eleven thousand, nine hundred forty-five".