405554101 has 4 divisors (see below), whose sum is σ = 423186912. Its totient is φ = 387921292.

The previous prime is 405554099. The next prime is 405554111. The reversal of 405554101 is 101455504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 405554101 - 2¹ = 405554099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405554111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8816371 + ... + 8816416.

It is an arithmetic number, because the mean of its divisors is an integer number (105796728).

Almost surely, 2^405554101 is an apocalyptic number.

It is an amenable number.

405554101 is a deficient number, since it is larger than the sum of its proper divisors (17632811).

405554101 is a wasteful number, since it uses less digits than its factorization.

405554101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17632810.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 405554101 is about 20138.3738419963. The cubic root of 405554101 is about 740.2008834950.

The spelling of 405554101 in words is "four hundred five million, five hundred fifty-four thousand, one hundred one".