5120639 has 4 divisors (see below), whose sum is σ = 5131560. Its totient is φ = 5109720.

The previous prime is 5120629. The next prime is 5120657. The reversal of 5120639 is 9360215.

5120639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9360215 = 5 ⋅1872043.

It is a cyclic number.

It is not a de Polignac number, because 5120639 - 2¹² = 5116543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5120629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4724 + ... + 5705.

It is an arithmetic number, because the mean of its divisors is an integer number (1282890).

Almost surely, 2^5120639 is an apocalyptic number.

5120639 is a deficient number, since it is larger than the sum of its proper divisors (10921).

5120639 is a wasteful number, since it uses less digits than its factorization.

5120639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 5120639 is about 2262.8828957770. The cubic root of 5120639 is about 172.3619451322.

The spelling of 5120639 in words is "five million, one hundred twenty thousand, six hundred thirty-nine".