55357285 has 8 divisors (see below), whose sum is σ = 67038840. Its totient is φ = 43879104.

The previous prime is 55357273. The next prime is 55357301. The reversal of 55357285 is 58275355.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10614564 + 44742721 = 3258^2 + 6689^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55357285 - 2⁷ = 55357157 is a prime.

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, 50242 + ... + 51331.

It is an arithmetic number, because the mean of its divisors is an integer number (8379855).

Almost surely, 2^55357285 is an apocalyptic number.

It is an amenable number.

55357285 is a deficient number, since it is larger than the sum of its proper divisors (11681555).

55357285 is a wasteful number, since it uses less digits than its factorization.

55357285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101687.

The product of its digits is 210000, while the sum is 40.

The square root of 55357285 is about 7440.2476437280. The cubic root of 55357285 is about 381.1169468523.

The spelling of 55357285 in words is "fifty-five million, three hundred fifty-seven thousand, two hundred eighty-five".