56105539 has 8 divisors (see below), whose sum is σ = 65429600. Its totient is φ = 48090168.

The previous prime is 56105531. The next prime is 56105551. The reversal of 56105539 is 93550165.

It is not a de Polignac number, because 56105539 - 2³ = 56105531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56105531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81444 + ... + 82129.

It is an arithmetic number, because the mean of its divisors is an integer number (8178700).

Almost surely, 2^56105539 is an apocalyptic number.

56105539 is a deficient number, since it is larger than the sum of its proper divisors (9324061).

56105539 is an equidigital number, since it uses as much as digits as its factorization.

56105539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163594 (or 163580 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 56105539 is about 7490.3630753122. The cubic root of 56105539 is about 382.8264295884.

It can be divided in two parts, 56105 and 539, that added together give a square (56644 = 238²).

The spelling of 56105539 in words is "fifty-six million, one hundred five thousand, five hundred thirty-nine".