555012405 has 40 divisors (see below), whose sum is σ = 1002170400. Its totient is φ = 293847264.

The previous prime is 555012391. The next prime is 555012407. The reversal of 555012405 is 504210555.

It is not a de Polignac number, because 555012405 - 2¹⁰ = 555011381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555012407) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 51366 + ... + 61224.

It is an arithmetic number, because the mean of its divisors is an integer number (25054260).

Almost surely, 2^555012405 is an apocalyptic number.

It is an amenable number.

555012405 is a deficient number, since it is larger than the sum of its proper divisors (447157995).

555012405 is a wasteful number, since it uses less digits than its factorization.

555012405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10015 (or 10006 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 555012405 is about 23558.7012587706. The cubic root of 555012405 is about 821.8026991968.

It can be divided in two parts, 5550 and 12405, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 555012405 in words is "five hundred fifty-five million, twelve thousand, four hundred five".