405423055 has 16 divisors (see below), whose sum is σ = 515752704. Its totient is φ = 304888320.

The previous prime is 405423041. The next prime is 405423059. The reversal of 405423055 is 550324504.

It is a de Polignac number, because none of the positive numbers 2^k-405423055 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 (405423059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81829 + ... + 86641.

It is an arithmetic number, because the mean of its divisors is an integer number (32234544).

Almost surely, 2^405423055 is an apocalyptic number.

405423055 is a deficient number, since it is larger than the sum of its proper divisors (110329649).

405423055 is a wasteful number, since it uses less digits than its factorization.

405423055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 405423055 is about 20135.1199400451. The cubic root of 405423055 is about 740.1211482928.

Adding to 405423055 its reverse (550324504), we get a palindrome (955747559).

The spelling of 405423055 in words is "four hundred five million, four hundred twenty-three thousand, fifty-five".