55021064 has 32 divisors (see below), whose sum is σ = 118361280. Its totient is φ = 23488704.

The previous prime is 55021039. The next prime is 55021069. The reversal of 55021064 is 46012055.

55021064 = T₁₃₉ + T₁₄₀ + ... + T₆₉₂.

It is not an unprimeable number, because it can be changed into a prime (55021069) 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 in 7 ways as a sum of consecutive naturals, for example, 13739 + ... + 17285.

It is an arithmetic number, because the mean of its divisors is an integer number (3698790).

Almost surely, 2^55021064 is an apocalyptic number.

It is an amenable number.

55021064 is an abundant number, since it is smaller than the sum of its proper divisors (63340216).

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

55021064 is a wasteful number, since it uses less digits than its factorization.

55021064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 55021064 is about 7417.6184857406. The cubic root of 55021064 is about 380.3437886013.

Subtracting from 55021064 its reverse (46012055), we obtain a palindrome (9009009).

The spelling of 55021064 in words is "fifty-five million, twenty-one thousand, sixty-four".