505228405 has 8 divisors (see below), whose sum is σ = 661389984. Its totient is φ = 367438800.

The previous prime is 505228391. The next prime is 505228429. The reversal of 505228405 is 504822505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505228405 - 2¹³ = 505220213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4592931 + ... + 4593040.

It is an arithmetic number, because the mean of its divisors is an integer number (82673748).

Almost surely, 2^505228405 is an apocalyptic number.

505228405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505228405 is a deficient number, since it is larger than the sum of its proper divisors (156161579).

505228405 is a wasteful number, since it uses less digits than its factorization.

505228405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185987.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 505228405 is about 22477.2864242995. The cubic root of 505228405 is about 796.4574638056.

The spelling of 505228405 in words is "five hundred five million, two hundred twenty-eight thousand, four hundred five".