55628361 has 6 divisors (see below), whose sum is σ = 80352090. Its totient is φ = 37085568.

The previous prime is 55628347. The next prime is 55628381. The reversal of 55628361 is 16382655.

It can be written as a sum of positive squares in only one way, i.e., 52925625 + 2702736 = 7275^2 + 1644^2 .

It is not a de Polignac number, because 55628361 - 2¹¹ = 55626313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55628381) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3090456 + ... + 3090473.

It is an arithmetic number, because the mean of its divisors is an integer number (13392015).

Almost surely, 2^55628361 is an apocalyptic number.

It is an amenable number.

55628361 is a deficient number, since it is larger than the sum of its proper divisors (24723729).

55628361 is a wasteful number, since it uses less digits than its factorization.

55628361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180935 (or 6180932 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55628361 is about 7458.4422636366. The cubic root of 55628361 is about 381.7380242833.

The spelling of 55628361 in words is "fifty-five million, six hundred twenty-eight thousand, three hundred sixty-one".