55010381 has 4 divisors (see below), whose sum is σ = 55348032. Its totient is φ = 54672732.

The previous prime is 55010369. The next prime is 55010387. The reversal of 55010381 is 18301055.

55010381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18301055 = 5 ⋅3660211.

It is a cyclic number.

It is not a de Polignac number, because 55010381 - 2¹⁸ = 54748237 is a prime.

It is a super-2 number, since 2×55010381² = 6052284035530322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55010387) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 168581 + ... + 168906.

It is an arithmetic number, because the mean of its divisors is an integer number (13837008).

Almost surely, 2^55010381 is an apocalyptic number.

It is an amenable number.

55010381 is a deficient number, since it is larger than the sum of its proper divisors (337651).

55010381 is a wasteful number, since it uses less digits than its factorization.

55010381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337650.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 55010381 is about 7416.8983409509. The cubic root of 55010381 is about 380.3191709040.

The spelling of 55010381 in words is "fifty-five million, ten thousand, three hundred eighty-one".