55887845 has 16 divisors (see below), whose sum is σ = 72947952. Its totient is φ = 40857600.

The previous prime is 55887803. The next prime is 55887859. The reversal of 55887845 is 54878855.

It can be written as a sum of positive squares in 8 ways, for example, as 6340324 + 49547521 = 2518^2 + 7039^2 .

It is not a de Polignac number, because 55887845 - 2¹² = 55883749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55887793 and 55887802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2309 + ... + 10821.

It is an arithmetic number, because the mean of its divisors is an integer number (4559247).

Almost surely, 2^55887845 is an apocalyptic number.

It is an amenable number.

55887845 is a deficient number, since it is larger than the sum of its proper divisors (17060107).

55887845 is a wasteful number, since it uses less digits than its factorization.

55887845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8632.

The product of its digits is 1792000, while the sum is 50.

The square root of 55887845 is about 7475.8173466184. The cubic root of 55887845 is about 382.3306553828.

The spelling of 55887845 in words is "fifty-five million, eight hundred eighty-seven thousand, eight hundred forty-five".