505056621 has 8 divisors (see below), whose sum is σ = 713021184. Its totient is φ = 316898240.

The previous prime is 505056599. The next prime is 505056647. The reversal of 505056621 is 126650505.

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 505056621 - 2⁷ = 505056493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505056691) 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, 4951485 + ... + 4951586.

It is an arithmetic number, because the mean of its divisors is an integer number (89127648).

Almost surely, 2^505056621 is an apocalyptic number.

505056621 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

505056621 is a deficient number, since it is larger than the sum of its proper divisors (207964563).

505056621 is a wasteful number, since it uses less digits than its factorization.

505056621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9903091.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 505056621 is about 22473.4648196490. The cubic root of 505056621 is about 796.3671850609.

The spelling of 505056621 in words is "five hundred five million, fifty-six thousand, six hundred twenty-one".