123352551 has 30 divisors (see below), whose sum is σ = 214358760. Its totient is φ = 70484904.

The previous prime is 123352531. The next prime is 123352577. The reversal of 123352551 is 155253321.

It is a happy number.

It is not a de Polignac number, because 123352551 - 2⁹ = 123352039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123352511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 11571 + ... + 19508.

It is an arithmetic number, because the mean of its divisors is an integer number (7145292).

Almost surely, 2^123352551 is an apocalyptic number.

123352551 is a deficient number, since it is larger than the sum of its proper divisors (91006209).

123352551 is an equidigital number, since it uses as much as digits as its factorization.

123352551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31105 (or 31089 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 123352551 is about 11106.4193599918. The cubic root of 123352551 is about 497.7936799571.

The spelling of 123352551 in words is "one hundred twenty-three million, three hundred fifty-two thousand, five hundred fifty-one".