123255501 has 8 divisors (see below), whose sum is σ = 168162720. Its totient is φ = 80259312.

The previous prime is 123255499. The next prime is 123255521. The reversal of 123255501 is 105552321.

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 123255501 - 2¹ = 123255499 is a prime.

It is a super-2 number, since 2×123255501² = 30383837053522002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123255521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477606 + ... + 477863.

It is an arithmetic number, because the mean of its divisors is an integer number (21020340).

Almost surely, 2^123255501 is an apocalyptic number.

It is an amenable number.

123255501 is a deficient number, since it is larger than the sum of its proper divisors (44907219).

123255501 is an equidigital number, since it uses as much as digits as its factorization.

123255501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955515.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 123255501 is about 11102.0494054026. The cubic root of 123255501 is about 497.6630961099.

The spelling of 123255501 in words is "one hundred twenty-three million, two hundred fifty-five thousand, five hundred one".