500455121 has 4 divisors (see below), whose sum is σ = 500558772. Its totient is φ = 500351472.

The previous prime is 500455063. The next prime is 500455127. The reversal of 500455121 is 121554005.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 308494096 + 191961025 = 17564^2 + 13855^2 .

It is a cyclic number.

It is not a de Polignac number, because 500455121 - 2¹⁴ = 500438737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500455127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44210 + ... + 54363.

It is an arithmetic number, because the mean of its divisors is an integer number (125139693).

Almost surely, 2^500455121 is an apocalyptic number.

It is an amenable number.

500455121 is a deficient number, since it is larger than the sum of its proper divisors (103651).

500455121 is an equidigital number, since it uses as much as digits as its factorization.

500455121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103650.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 500455121 is about 22370.8542751501. The cubic root of 500455121 is about 793.9412728043.

The spelling of 500455121 in words is "five hundred million, four hundred fifty-five thousand, one hundred twenty-one".