550100405 has 4 divisors (see below), whose sum is σ = 660120492. Its totient is φ = 440080320.

The previous prime is 550100393. The next prime is 550100413. The reversal of 550100405 is 504001055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504001055 = 5 ⋅100800211.

It can be written as a sum of positive squares in 2 ways, for example, as 248661361 + 301439044 = 15769^2 + 17362^2 .

It is not a de Polignac number, because 550100405 - 2⁸ = 550100149 is a prime.

It is a super-2 number, since 2×550100405² = 605220911162328050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55010036 + ... + 55010045.

It is an arithmetic number, because the mean of its divisors is an integer number (165030123).

Almost surely, 2^550100405 is an apocalyptic number.

It is an amenable number.

550100405 is a deficient number, since it is larger than the sum of its proper divisors (110020087).

550100405 is a wasteful number, since it uses less digits than its factorization.

550100405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110020086.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 550100405 is about 23454.2193432227. The cubic root of 550100405 is about 819.3711245078.

The spelling of 550100405 in words is "five hundred fifty million, one hundred thousand, four hundred five".