55218485 has 8 divisors (see below), whose sum is σ = 75728256. Its totient is φ = 37864080.

The previous prime is 55218463. The next prime is 55218491. The reversal of 55218485 is 58481255.

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

It is not a de Polignac number, because 55218485 - 2¹² = 55214389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788801 + ... + 788870.

It is an arithmetic number, because the mean of its divisors is an integer number (9466032).

Almost surely, 2^55218485 is an apocalyptic number.

It is an amenable number.

55218485 is a deficient number, since it is larger than the sum of its proper divisors (20509771).

55218485 is a wasteful number, since it uses less digits than its factorization.

55218485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577683.

The product of its digits is 64000, while the sum is 38.

The square root of 55218485 is about 7430.9141429571. The cubic root of 55218485 is about 380.7981492691.

The spelling of 55218485 in words is "fifty-five million, two hundred eighteen thousand, four hundred eighty-five".