505069921 has 8 divisors (see below), whose sum is σ = 511280000. Its totient is φ = 498888720.

The previous prime is 505069907. The next prime is 505069969. The reversal of 505069921 is 129960505.

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

It is a cyclic number.

It is not a de Polignac number, because 505069921 - 2⁷ = 505069793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505060921) 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 7 ways as a sum of consecutive naturals, for example, 29080 + ... + 43078.

It is an arithmetic number, because the mean of its divisors is an integer number (63910000).

Almost surely, 2^505069921 is an apocalyptic number.

It is an amenable number.

505069921 is a deficient number, since it is larger than the sum of its proper divisors (6210079).

505069921 is a wasteful number, since it uses less digits than its factorization.

505069921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14439.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 505069921 is about 22473.7607222289. The cubic root of 505069921 is about 796.3741754261.

The spelling of 505069921 in words is "five hundred five million, sixty-nine thousand, nine hundred twenty-one".