5156639 has 4 divisors (see below), whose sum is σ = 5173224. Its totient is φ = 5140056.

The previous prime is 5156609. The next prime is 5156663. The reversal of 5156639 is 9366515.

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 5156639 - 2⁸ = 5156383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5156599 and 5156608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156609) 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, 7817 + ... + 8450.

It is an arithmetic number, because the mean of its divisors is an integer number (1293306).

Almost surely, 2^5156639 is an apocalyptic number.

5156639 is a deficient number, since it is larger than the sum of its proper divisors (16585).

5156639 is a wasteful number, since it uses less digits than its factorization.

5156639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16584.

The product of its digits is 24300, while the sum is 35.

The square root of 5156639 is about 2270.8234189386. The cubic root of 5156639 is about 172.7649251334.

The spelling of 5156639 in words is "five million, one hundred fifty-six thousand, six hundred thirty-nine".