55555210023 has 4 divisors (see below), whose sum is σ = 74073613368. Its totient is φ = 37036806680.

The previous prime is 55555210021. The next prime is 55555210033. The reversal of 55555210023 is 32001255555.

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 55555210023 - 2¹ = 55555210021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555210021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9259201668 + ... + 9259201673.

It is an arithmetic number, because the mean of its divisors is an integer number (18518403342).

Almost surely, 2^55555210023 is an apocalyptic number.

55555210023 is a deficient number, since it is larger than the sum of its proper divisors (18518403345).

55555210023 is a wasteful number, since it uses less digits than its factorization.

55555210023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518403344.

The product of its (nonzero) digits is 37500, while the sum is 33.

Adding to 55555210023 its reverse (32001255555), we get a palindrome (87556465578).

The spelling of 55555210023 in words is "fifty-five billion, five hundred fifty-five million, two hundred ten thousand, twenty-three".