55273698 has 64 divisors (see below), whose sum is σ = 136944000. Its totient is φ = 16422912.

The previous prime is 55273663. The next prime is 55273709. The reversal of 55273698 is 89637255.

It is a happy number.

55273698 is a `hidden beast` number, since 5 + 527 + 36 + 98 = 666.

55273698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 15858 + ... + 19026.

It is an arithmetic number, because the mean of its divisors is an integer number (2139750).

Almost surely, 2^55273698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55273698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68472000).

55273698 is an abundant number, since it is smaller than the sum of its proper divisors (81670302).

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

55273698 is a wasteful number, since it uses less digits than its factorization.

55273698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3210 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 55273698 is about 7434.6283027465. The cubic root of 55273698 is about 380.9250270979.

The spelling of 55273698 in words is "fifty-five million, two hundred seventy-three thousand, six hundred ninety-eight".