55521874 has 4 divisors (see below), whose sum is σ = 83282814. Its totient is φ = 27760936.

The previous prime is 55521859. The next prime is 55521883. The reversal of 55521874 is 47812555.

55521874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44796249 + 10725625 = 6693^2 + 3275^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13880467 + ... + 13880470.

Almost surely, 2^55521874 is an apocalyptic number.

55521874 is a deficient number, since it is larger than the sum of its proper divisors (27760940).

55521874 is a wasteful number, since it uses less digits than its factorization.

55521874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27760939.

The product of its digits is 56000, while the sum is 37.

The square root of 55521874 is about 7451.3001550065. The cubic root of 55521874 is about 381.4942870831.

The spelling of 55521874 in words is "fifty-five million, five hundred twenty-one thousand, eight hundred seventy-four".