123553115 has 8 divisors (see below), whose sum is σ = 169444320. Its totient is φ = 84722112.

The previous prime is 123553109. The next prime is 123553163. The reversal of 123553115 is 511355321.

It is a happy number.

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 123553115 - 2⁴ = 123553099 is a prime.

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, 1765010 + ... + 1765079.

It is an arithmetic number, because the mean of its divisors is an integer number (21180540).

Almost surely, 2^123553115 is an apocalyptic number.

123553115 is a deficient number, since it is larger than the sum of its proper divisors (45891205).

123553115 is an equidigital number, since it uses as much as digits as its factorization.

123553115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530101.

The product of its digits is 2250, while the sum is 26.

The square root of 123553115 is about 11115.4448853836. Note that the first 3 decimals coincide. The cubic root of 123553115 is about 498.0633282905.

The spelling of 123553115 in words is "one hundred twenty-three million, five hundred fifty-three thousand, one hundred fifteen".