5071945 has 4 divisors (see below), whose sum is σ = 6086340. Its totient is φ = 4057552.

The previous prime is 5071943. The next prime is 5071949. The reversal of 5071945 is 5491705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5491705 = 5 ⋅1098341.

It can be written as a sum of positive squares in 2 ways, for example, as 1871424 + 3200521 = 1368^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 5071945 - 2¹ = 5071943 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

5071945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5071943) 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, 507190 + ... + 507199.

It is an arithmetic number, because the mean of its divisors is an integer number (1521585).

Almost surely, 2^5071945 is an apocalyptic number.

It is an amenable number.

5071945 is a deficient number, since it is larger than the sum of its proper divisors (1014395).

5071945 is a wasteful number, since it uses less digits than its factorization.

5071945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014394.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 5071945 is about 2252.0979108378. The cubic root of 5071945 is about 171.8138535107.

The spelling of 5071945 in words is "five million, seventy-one thousand, nine hundred forty-five".