56556445 has 16 divisors (see below), whose sum is σ = 77935680. Its totient is φ = 38966400.

The previous prime is 56556439. The next prime is 56556457. The reversal of 56556445 is 54465565.

It is not a de Polignac number, because 56556445 - 2⁵ = 56556413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56556398 and 56556407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26016 + ... + 28105.

It is an arithmetic number, because the mean of its divisors is an integer number (4870980).

Almost surely, 2^56556445 is an apocalyptic number.

56556445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56556445 is a deficient number, since it is larger than the sum of its proper divisors (21379235).

56556445 is a wasteful number, since it uses less digits than its factorization.

56556445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54156.

The product of its digits is 360000, while the sum is 40.

The square root of 56556445 is about 7520.4019174510. The cubic root of 56556445 is about 383.8492540713.

It can be divided in two parts, 5655 and 6445, that added together give a square (12100 = 110²).

The spelling of 56556445 in words is "fifty-six million, five hundred fifty-six thousand, four hundred forty-five".