55081506 has 8 divisors (see below), whose sum is σ = 110163024. Its totient is φ = 18360500.

The previous prime is 55081489. The next prime is 55081517. The reversal of 55081506 is 60518055.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

55081506 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4590120 + ... + 4590131.

It is an arithmetic number, because the mean of its divisors is an integer number (13770378).

Almost surely, 2^55081506 is an apocalyptic number.

55081506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55081506 is a wasteful number, since it uses less digits than its factorization.

55081506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9180256.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 55081506 is about 7421.6915861547. The cubic root of 55081506 is about 380.4830099881.

The spelling of 55081506 in words is "fifty-five million, eighty-one thousand, five hundred six".