55508378 has 8 divisors (see below), whose sum is σ = 86133780. Its totient is φ = 26797120.

The previous prime is 55508377. The next prime is 55508393. The reversal of 55508378 is 87380555.

It can be written as a sum of positive squares in 2 ways, for example, as 54656449 + 851929 = 7393^2 + 923^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55508377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478463 + ... + 478578.

Almost surely, 2^55508378 is an apocalyptic number.

55508378 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

55508378 is a deficient number, since it is larger than the sum of its proper divisors (30625402).

55508378 is a wasteful number, since it uses less digits than its factorization.

55508378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957072.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 55508378 is about 7450.3944862000. The cubic root of 55508378 is about 381.4633739567.

The spelling of 55508378 in words is "fifty-five million, five hundred eight thousand, three hundred seventy-eight".