505210749 has 8 divisors (see below), whose sum is σ = 679794720. Its totient is φ = 333716976.

The previous prime is 505210729. The next prime is 505210757. The reversal of 505210749 is 947012505.

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

It is not a de Polignac number, because 505210749 - 2⁷ = 505210621 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505210729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772167 + ... + 772820.

It is an arithmetic number, because the mean of its divisors is an integer number (84974340).

Almost surely, 2^505210749 is an apocalyptic number.

It is an amenable number.

505210749 is a deficient number, since it is larger than the sum of its proper divisors (174583971).

505210749 is a wasteful number, since it uses less digits than its factorization.

505210749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545099.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 505210749 is about 22476.8936688324. The cubic root of 505210749 is about 796.4481858786.

The spelling of 505210749 in words is "five hundred five million, two hundred ten thousand, seven hundred forty-nine".