505213417 has 4 divisors (see below), whose sum is σ = 521510656. Its totient is φ = 488916180.

The previous prime is 505213411. The next prime is 505213451. The reversal of 505213417 is 714312505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505213417 - 2³ = 505213409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505213411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8148573 + ... + 8148634.

It is an arithmetic number, because the mean of its divisors is an integer number (130377664).

Almost surely, 2^505213417 is an apocalyptic number.

It is an amenable number.

505213417 is a deficient number, since it is larger than the sum of its proper divisors (16297239).

505213417 is a wasteful number, since it uses less digits than its factorization.

505213417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16297238.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 505213417 is about 22476.9530185922. The cubic root of 505213417 is about 796.4495878810.

The spelling of 505213417 in words is "five hundred five million, two hundred thirteen thousand, four hundred seventeen".