5181268 has 6 divisors (see below), whose sum is σ = 9067226. Its totient is φ = 2590632.

The previous prime is 5181251. The next prime is 5181269. The reversal of 5181268 is 8621815.

It can be written as a sum of positive squares in only one way, i.e., 3055504 + 2125764 = 1748^2 + 1458^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647655 + ... + 647662.

Almost surely, 2^5181268 is an apocalyptic number.

It is an amenable number.

5181268 is a deficient number, since it is larger than the sum of its proper divisors (3885958).

5181268 is a wasteful number, since it uses less digits than its factorization.

5181268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295321 (or 1295319 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 5181268 is about 2276.2398819105. The cubic root of 5181268 is about 173.0395401174.

The spelling of 5181268 in words is "five million, one hundred eighty-one thousand, two hundred sixty-eight".