55420580 has 24 divisors (see below), whose sum is σ = 116523960. Its totient is φ = 22141440.

The previous prime is 55420577. The next prime is 55420583. The reversal of 55420580 is 8502455.

55420580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55420577) and next prime (55420583).

It can be written as a sum of positive squares in 4 ways, for example, as 2334784 + 53085796 = 1528^2 + 7286^2 .

It is not an unprimeable number, because it can be changed into a prime (55420583) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28850 + ... + 30710.

It is an arithmetic number, because the mean of its divisors is an integer number (4855165).

Almost surely, 2^55420580 is an apocalyptic number.

It is a pronic number, being equal to 7444×7445.

It is an amenable number.

55420580 is an abundant number, since it is smaller than the sum of its proper divisors (61103380).

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

55420580 is a wasteful number, since it uses less digits than its factorization.

55420580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359 (or 3357 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 55420580 is about 7444.4999832091. The cubic root of 55420580 is about 381.2621467061.

The spelling of 55420580 in words is "fifty-five million, four hundred twenty thousand, five hundred eighty".