55550023 has 4 divisors (see below), whose sum is σ = 56841928. Its totient is φ = 54258120.

The previous prime is 55550021. The next prime is 55550029. The reversal of 55550023 is 32005555.

55550023 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.

It is a cyclic number.

It is not a de Polignac number, because 55550023 - 2¹ = 55550021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55550023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550021) 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, 645888 + ... + 645973.

It is an arithmetic number, because the mean of its divisors is an integer number (14210482).

Almost surely, 2^55550023 is an apocalyptic number.

55550023 is a deficient number, since it is larger than the sum of its proper divisors (1291905).

55550023 is a wasteful number, since it uses less digits than its factorization.

55550023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291904.

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 55550023 is about 7453.1887806495. The cubic root of 55550023 is about 381.5587473737.

Adding to 55550023 its reverse (32005555), we get a palindrome (87555578).

The spelling of 55550023 in words is "fifty-five million, five hundred fifty thousand, twenty-three".