55105574 has 4 divisors (see below), whose sum is σ = 82658364. Its totient is φ = 27552786.

The previous prime is 55105571. The next prime is 55105591. The reversal of 55105574 is 47550155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47550155 = 5 ⋅9510031.

It is a self number, because there is not a number n which added to its sum of digits gives 55105574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55105571) 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 as a sum of consecutive naturals, namely, 13776392 + ... + 13776395.

It is an arithmetic number, because the mean of its divisors is an integer number (20664591).

Almost surely, 2^55105574 is an apocalyptic number.

55105574 is a deficient number, since it is larger than the sum of its proper divisors (27552790).

55105574 is a wasteful number, since it uses less digits than its factorization.

55105574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27552789.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 55105574 is about 7423.3128722963. The cubic root of 55105574 is about 380.5384195819.

The spelling of 55105574 in words is "fifty-five million, one hundred five thousand, five hundred seventy-four".