55880215 has 16 divisors (see below), whose sum is σ = 68234400. Its totient is φ = 43926400.

The previous prime is 55880213. The next prime is 55880221. The reversal of 55880215 is 51208855.

It is a happy number.

55880215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55880215 - 2¹ = 55880213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55880213) 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 15 ways as a sum of consecutive naturals, for example, 79365 + ... + 80065.

It is an arithmetic number, because the mean of its divisors is an integer number (4264650).

Almost surely, 2^55880215 is an apocalyptic number.

55880215 is a deficient number, since it is larger than the sum of its proper divisors (12354185).

55880215 is a wasteful number, since it uses less digits than its factorization.

55880215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 55880215 is about 7475.3070171064. The cubic root of 55880215 is about 382.3132555608.

The spelling of 55880215 in words is "fifty-five million, eight hundred eighty thousand, two hundred fifteen".