55845727 has 4 divisors (see below), whose sum is σ = 63823696. Its totient is φ = 47867760.

The previous prime is 55845719. The next prime is 55845733. The reversal of 55845727 is 72754855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72754855 = 5 ⋅14550971.

It is a cyclic number.

It is not a de Polignac number, because 55845727 - 2³ = 55845719 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 (55845707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988974 + ... + 3988987.

It is an arithmetic number, because the mean of its divisors is an integer number (15955924).

Almost surely, 2^55845727 is an apocalyptic number.

55845727 is a deficient number, since it is larger than the sum of its proper divisors (7977969).

55845727 is an equidigital number, since it uses as much as digits as its factorization.

55845727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7977968.

The product of its digits is 392000, while the sum is 43.

The square root of 55845727 is about 7472.9998661849. Note that the first 3 decimals coincide. The cubic root of 55845727 is about 382.2345876875.

It can be divided in two parts, 5584 and 5727, that added together give a palindrome (11311).

The spelling of 55845727 in words is "fifty-five million, eight hundred forty-five thousand, seven hundred twenty-seven".