55045450423 has 4 divisors (see below), whose sum is σ = 55663938720. Its totient is φ = 54426962128.

The previous prime is 55045450409. The next prime is 55045450489. The reversal of 55045450423 is 32405454055.

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 55045450423 - 2⁹ = 55045449911 is a prime.

It is a super-2 number, since 2×55045450423² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55045453423) 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, 309244015 + ... + 309244192.

It is an arithmetic number, because the mean of its divisors is an integer number (13915984680).

Almost surely, 2^55045450423 is an apocalyptic number.

55045450423 is a deficient number, since it is larger than the sum of its proper divisors (618488297).

55045450423 is an equidigital number, since it uses as much as digits as its factorization.

55045450423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618488296.

The product of its (nonzero) digits is 240000, while the sum is 37.

The spelling of 55045450423 in words is "fifty-five billion, forty-five million, four hundred fifty thousand, four hundred twenty-three".