405480555 has 24 divisors (see below), whose sum is σ = 704583360. Its totient is φ = 215717760.

The previous prime is 405480553. The next prime is 405480557. The reversal of 405480555 is 555084504.

It is an interprime number because it is at equal distance from previous prime (405480553) and next prime (405480557).

It is not a de Polignac number, because 405480555 - 2¹ = 405480553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405480553) 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 23 ways as a sum of consecutive naturals, for example, 7390 + ... + 29420.

It is an arithmetic number, because the mean of its divisors is an integer number (29357640).

Almost surely, 2^405480555 is an apocalyptic number.

405480555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405480555 is a deficient number, since it is larger than the sum of its proper divisors (299102805).

405480555 is a wasteful number, since it uses less digits than its factorization.

405480555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22451 (or 22448 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The square root of 405480555 is about 20136.5477428481. The cubic root of 405480555 is about 740.1561363987.

The spelling of 405480555 in words is "four hundred five million, four hundred eighty thousand, five hundred fifty-five".