55845777 has 16 divisors (see below), whose sum is σ = 82056128. Its totient is φ = 33566400.

The previous prime is 55845767. The next prime is 55845781. The reversal of 55845777 is 77754855.

It is a happy number.

It is not a de Polignac number, because 55845777 - 2¹¹ = 55843729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55845707) 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 15 ways as a sum of consecutive naturals, for example, 14974 + ... + 18327.

It is an arithmetic number, because the mean of its divisors is an integer number (5128508).

Almost surely, 2^55845777 is an apocalyptic number.

It is an amenable number.

55845777 is a deficient number, since it is larger than the sum of its proper divisors (26210351).

55845777 is a wasteful number, since it uses less digits than its factorization.

55845777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33360.

The product of its digits is 1372000, while the sum is 48.

The square root of 55845777 is about 7473.0032115609. The cubic root of 55845777 is about 382.2347017620.

Subtracting from 55845777 its sum of digits (48), we obtain a square (55845729 = 7473²).

The spelling of 55845777 in words is "fifty-five million, eight hundred forty-five thousand, seven hundred seventy-seven".