123355455 has 16 divisors (see below), whose sum is σ = 198072960. Its totient is φ = 65554848.

The previous prime is 123355439. The next prime is 123355457. The reversal of 123355455 is 554553321.

123355455 = 4965² + 4966² + ... + 4969².

It is a happy number.

It is not a de Polignac number, because 123355455 - 2⁴ = 123355439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123355457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10285 + ... + 18774.

It is an arithmetic number, because the mean of its divisors is an integer number (12379560).

Almost surely, 2^123355455 is an apocalyptic number.

123355455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123355455 is a deficient number, since it is larger than the sum of its proper divisors (74717505).

123355455 is a wasteful number, since it uses less digits than its factorization.

123355455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29350.

The product of its digits is 45000, while the sum is 33.

The square root of 123355455 is about 11106.5500944263. The cubic root of 123355455 is about 497.7975863255.

The spelling of 123355455 in words is "one hundred twenty-three million, three hundred fifty-five thousand, four hundred fifty-five".