55021446 has 24 divisors (see below), whose sum is σ = 120725280. Its totient is φ = 18107856.

The previous prime is 55021423. The next prime is 55021471. The reversal of 55021446 is 64412055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17925 + ... + 20768.

It is an arithmetic number, because the mean of its divisors is an integer number (5030220).

Almost surely, 2^55021446 is an apocalyptic number.

55021446 is an abundant number, since it is smaller than the sum of its proper divisors (65703834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55021446 is a wasteful number, since it uses less digits than its factorization.

55021446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38780 (or 38777 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55021446 is about 7417.6442352003. The cubic root of 55021446 is about 380.3446688156.

The spelling of 55021446 in words is "fifty-five million, twenty-one thousand, four hundred forty-six".