55075020 has 288 divisors, whose sum is σ = 212357376. Its totient is φ = 10483200.

The previous prime is 55075001. The next prime is 55075021. The reversal of 55075020 is 2057055.

It is not an unprimeable number, because it can be changed into a prime (55075021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 420355 + ... + 420485.

It is an arithmetic number, because the mean of its divisors is an integer number (737352).

Almost surely, 2^55075020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55075020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106178688).

55075020 is an abundant number, since it is smaller than the sum of its proper divisors (157282356).

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

55075020 is a wasteful number, since it uses less digits than its factorization.

55075020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 55075020 is about 7421.2546109132. The cubic root of 55075020 is about 380.4680750922.

The spelling of 55075020 in words is "fifty-five million, seventy-five thousand, twenty".