123455501 has 8 divisors (see below), whose sum is σ = 133078680. Its totient is φ = 113850432.

The previous prime is 123455461. The next prime is 123455531. The reversal of 123455501 is 105554321.

It can be written as a sum of positive squares in 4 ways, for example, as 10883401 + 112572100 = 3299^2 + 10610^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123455501 is a prime.

It is a super-2 number, since 2×123455501² = 30482521454322002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123455531) 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, 11855 + ... + 19683.

It is an arithmetic number, because the mean of its divisors is an integer number (16634835).

Almost surely, 2^123455501 is an apocalyptic number.

It is an amenable number.

123455501 is a deficient number, since it is larger than the sum of its proper divisors (9623179).

123455501 is a wasteful number, since it uses less digits than its factorization.

123455501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 123455501 is about 11111.0531004041. The cubic root of 123455501 is about 497.9321275973.

The spelling of 123455501 in words is "one hundred twenty-three million, four hundred fifty-five thousand, five hundred one".