55506018 has 8 divisors (see below), whose sum is σ = 111012048. Its totient is φ = 18502004.

The previous prime is 55505993. The next prime is 55506023. The reversal of 55506018 is 81060555.

It is a happy number.

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

55506018 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625496 + ... + 4625507.

It is an arithmetic number, because the mean of its divisors is an integer number (13876506).

Almost surely, 2^55506018 is an apocalyptic number.

55506018 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.

55506018 is a wasteful number, since it uses less digits than its factorization.

55506018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251008.

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

The square root of 55506018 is about 7450.2361036413. The cubic root of 55506018 is about 381.4579677678.

The spelling of 55506018 in words is "fifty-five million, five hundred six thousand, eighteen".