555412405 has 4 divisors (see below), whose sum is σ = 666494892. Its totient is φ = 444329920.

The previous prime is 555412393. The next prime is 555412409. The reversal of 555412405 is 504214555.

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 75933796 + 479478609 = 8714^2 + 21897^2 .

It is not a de Polignac number, because 555412405 - 2¹⁵ = 555379637 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555412409) 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, 55541236 + ... + 55541245.

It is an arithmetic number, because the mean of its divisors is an integer number (166623723).

Almost surely, 2^555412405 is an apocalyptic number.

It is an amenable number.

555412405 is a deficient number, since it is larger than the sum of its proper divisors (111082487).

555412405 is a wasteful number, since it uses less digits than its factorization.

555412405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111082486.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 555412405 is about 23567.1891620532. The cubic root of 555412405 is about 822.0000774524. Note that the first 4 decimals are identical.

The spelling of 555412405 in words is "five hundred fifty-five million, four hundred twelve thousand, four hundred five".