505070851 has 4 divisors (see below), whose sum is σ = 506075472. Its totient is φ = 504066232.

The previous prime is 505070849. The next prime is 505070861. The reversal of 505070851 is 158070505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505070851 - 2¹ = 505070849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505070861) 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 3 ways as a sum of consecutive naturals, for example, 501556 + ... + 502561.

It is an arithmetic number, because the mean of its divisors is an integer number (126518868).

Almost surely, 2^505070851 is an apocalyptic number.

505070851 is a deficient number, since it is larger than the sum of its proper divisors (1004621).

505070851 is a wasteful number, since it uses less digits than its factorization.

505070851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004620.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 505070851 is about 22473.7814130155. The cubic root of 505070851 is about 796.3746642215.

The spelling of 505070851 in words is "five hundred five million, seventy thousand, eight hundred fifty-one".