5051639 has 4 divisors (see below), whose sum is σ = 5137320. Its totient is φ = 4965960.

The previous prime is 5051633. The next prime is 5051653. The reversal of 5051639 is 9361505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9361505 = 5 ⋅1872301.

It is a cyclic number.

It is not a de Polignac number, because 5051639 - 2⁸ = 5051383 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 (5051633) 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, 42752 + ... + 42869.

It is an arithmetic number, because the mean of its divisors is an integer number (1284330).

Almost surely, 2^5051639 is an apocalyptic number.

5051639 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

5051639 is a deficient number, since it is larger than the sum of its proper divisors (85681).

5051639 is an equidigital number, since it uses as much as digits as its factorization.

5051639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85680.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 5051639 is about 2247.5851485539. The cubic root of 5051639 is about 171.5842559583.

The spelling of 5051639 in words is "five million, fifty-one thousand, six hundred thirty-nine".