5157239 has 4 divisors (see below), whose sum is σ = 5460624. Its totient is φ = 4853856.

The previous prime is 5157203. The next prime is 5157241. The reversal of 5157239 is 9327515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5157239 - 2¹⁶ = 5091703 is a prime.

It is a super-2 number, since 2×5157239² = 53194228206242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5157739) 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, 151667 + ... + 151700.

It is an arithmetic number, because the mean of its divisors is an integer number (1365156).

Almost surely, 2^5157239 is an apocalyptic number.

5157239 is a deficient number, since it is larger than the sum of its proper divisors (303385).

5157239 is a wasteful number, since it uses less digits than its factorization.

5157239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303384.

The product of its digits is 9450, while the sum is 32.

The square root of 5157239 is about 2270.9555257644. The cubic root of 5157239 is about 172.7716255530.

The spelling of 5157239 in words is "five million, one hundred fifty-seven thousand, two hundred thirty-nine".