5217138 has 12 divisors (see below), whose sum is σ = 11303838. Its totient is φ = 1739040.

The previous prime is 5217133. The next prime is 5217139. The reversal of 5217138 is 8317125.

5217138 is a `hidden beast` number, since 521 + 7 + 138 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3560769 + 1656369 = 1887^2 + 1287^2 .

It is a super-2 number, since 2×5217138² = 54437057822088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5217133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144903 + ... + 144938.

Almost surely, 2^5217138 is an apocalyptic number.

5217138 is an abundant number, since it is smaller than the sum of its proper divisors (6086700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5217138 is a wasteful number, since it uses less digits than its factorization.

5217138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289849 (or 289846 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 5217138 is about 2284.1055142003. The cubic root of 5217138 is about 173.4379406368.

The spelling of 5217138 in words is "five million, two hundred seventeen thousand, one hundred thirty-eight".