55255040 has 112 divisors (see below), whose sum is σ = 141549120. Its totient is φ = 20643840.

The previous prime is 55255019. The next prime is 55255061. The reversal of 55255040 is 4055255.

It is an interprime number because it is at equal distance from previous prime (55255019) and next prime (55255061).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778205 + ... + 778275.

Almost surely, 2^55255040 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 55255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70774560).

55255040 is an abundant number, since it is smaller than the sum of its proper divisors (86294080).

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

55255040 is an equidigital number, since it uses as much as digits as its factorization.

55255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 55255040 is about 7433.3733930161. The cubic root of 55255040 is about 380.8821610256.

The spelling of 55255040 in words is "fifty-five million, two hundred fifty-five thousand, forty".