55378265 has 8 divisors (see below), whose sum is σ = 70363080. Its totient is φ = 41696512.

The previous prime is 55378237. The next prime is 55378283. The reversal of 55378265 is 56287355.

It can be written as a sum of positive squares in 4 ways, for example, as 17272336 + 38105929 = 4156^2 + 6173^2 .

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

It is not a de Polignac number, because 55378265 - 2¹⁰ = 55377241 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 325670 + ... + 325839.

It is an arithmetic number, because the mean of its divisors is an integer number (8795385).

Almost surely, 2^55378265 is an apocalyptic number.

It is an amenable number.

55378265 is a deficient number, since it is larger than the sum of its proper divisors (14984815).

55378265 is a wasteful number, since it uses less digits than its factorization.

55378265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651531.

The product of its digits is 252000, while the sum is 41.

The square root of 55378265 is about 7441.6574094754. The cubic root of 55378265 is about 381.1650876022.

The spelling of 55378265 in words is "fifty-five million, three hundred seventy-eight thousand, two hundred sixty-five".