123553445 has 8 divisors (see below), whose sum is σ = 153047040. Its totient is φ = 95654160.

The previous prime is 123553439. The next prime is 123553457. The reversal of 123553445 is 544355321.

It is a happy number.

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

It is not a de Polignac number, because 123553445 - 2⁴ = 123553429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398405 + ... + 398714.

It is an arithmetic number, because the mean of its divisors is an integer number (19130880).

Almost surely, 2^123553445 is an apocalyptic number.

It is an amenable number.

123553445 is a deficient number, since it is larger than the sum of its proper divisors (29493595).

123553445 is an equidigital number, since it uses as much as digits as its factorization.

123553445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797155.

The product of its digits is 36000, while the sum is 32.

The square root of 123553445 is about 11115.4597295838. The cubic root of 123553445 is about 498.0637717186.

The spelling of 123553445 in words is "one hundred twenty-three million, five hundred fifty-three thousand, four hundred forty-five".