505070521 has 8 divisors (see below), whose sum is σ = 538060320. Its totient is φ = 472721472.

The previous prime is 505070509. The next prime is 505070537. The reversal of 505070521 is 125070505.

It is a happy number.

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 505070521 - 2⁷ = 505070393 is a prime.

It is a super-2 number, since 2×505070521² = 510192462366422882, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505070591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158560 + ... + 161713.

It is an arithmetic number, because the mean of its divisors is an integer number (67257540).

Almost surely, 2^505070521 is an apocalyptic number.

It is an amenable number.

505070521 is a deficient number, since it is larger than the sum of its proper divisors (32989799).

505070521 is a wasteful number, since it uses less digits than its factorization.

505070521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320375.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 505070521 is about 22473.7740711257. The cubic root of 505070521 is about 796.3744907780.

The spelling of 505070521 in words is "five hundred five million, seventy thousand, five hundred twenty-one".