55123002400 has 72 divisors (see below), whose sum is σ = 134606634624. Its totient is φ = 22043040000.

The previous prime is 55123002359. The next prime is 55123002409. The reversal of 55123002400 is 420032155.

It is not an unprimeable number, because it can be changed into a prime (55123002409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3793549 + ... + 3808051.

It is an arithmetic number, because the mean of its divisors is an integer number (1869536592).

Almost surely, 2^55123002400 is an apocalyptic number.

55123002400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55123002400 is an abundant number, since it is smaller than the sum of its proper divisors (79483632224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55123002400 is a wasteful number, since it uses less digits than its factorization.

55123002400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19274 (or 19261 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 55123002400 its reverse (420032155), we get a palindrome (55543034555).

The spelling of 55123002400 in words is "fifty-five billion, one hundred twenty-three million, two thousand, four hundred".