55427842 has 4 divisors (see below), whose sum is σ = 83141766. Its totient is φ = 27713920.

The previous prime is 55427821. The next prime is 55427909. The reversal of 55427842 is 24872455.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24872455 = 5 ⋅4974491.

It can be written as a sum of positive squares in only one way, i.e., 28398241 + 27029601 = 5329^2 + 5199^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13856959 + ... + 13856962.

Almost surely, 2^55427842 is an apocalyptic number.

55427842 is a deficient number, since it is larger than the sum of its proper divisors (27713924).

55427842 is a wasteful number, since it uses less digits than its factorization.

55427842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27713923.

The product of its digits is 89600, while the sum is 37.

The square root of 55427842 is about 7444.9877098623. The cubic root of 55427842 is about 381.2787987920.

The spelling of 55427842 in words is "fifty-five million, four hundred twenty-seven thousand, eight hundred forty-two".