55750420 has 48 divisors (see below), whose sum is σ = 128431296. Its totient is φ = 20160000.

The previous prime is 55750411. The next prime is 55750433. The reversal of 55750420 is 2405755.

55750420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45820 + ... + 47020.

It is an arithmetic number, because the mean of its divisors is an integer number (2675652).

Almost surely, 2^55750420 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 55750420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64215648).

55750420 is an abundant number, since it is smaller than the sum of its proper divisors (72680876).

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

55750420 is a wasteful number, since it uses less digits than its factorization.

55750420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 55750420 is about 7466.6203867613. The cubic root of 55750420 is about 382.0170218012.

The spelling of 55750420 in words is "fifty-five million, seven hundred fifty thousand, four hundred twenty".