123555455 has 8 divisors (see below), whose sum is σ = 151064352. Its totient is φ = 96979168.

The previous prime is 123555449. The next prime is 123555521. The reversal of 123555455 is 554555321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123555455 - 2¹⁴ = 123539071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232859 + ... + 233388.

It is an arithmetic number, because the mean of its divisors is an integer number (18883044).

Almost surely, 2^123555455 is an apocalyptic number.

123555455 is a deficient number, since it is larger than the sum of its proper divisors (27508897).

123555455 is an equidigital number, since it uses as much as digits as its factorization.

123555455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466305.

The product of its digits is 75000, while the sum is 35.

The square root of 123555455 is about 11115.5501438300. The cubic root of 123555455 is about 498.0664725815.

The spelling of 123555455 in words is "one hundred twenty-three million, five hundred fifty-five thousand, four hundred fifty-five".