505120671 has 24 divisors (see below), whose sum is σ = 822546480. Its totient is φ = 306131760.

The previous prime is 505120661. The next prime is 505120709. The reversal of 505120671 is 176021505.

It is not a de Polignac number, because 505120671 - 2⁷ = 505120543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505120601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74040 + ... + 80573.

It is an arithmetic number, because the mean of its divisors is an integer number (34272770).

Almost surely, 2^505120671 is an apocalyptic number.

505120671 is a deficient number, since it is larger than the sum of its proper divisors (317425809).

505120671 is a wasteful number, since it uses less digits than its factorization.

505120671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154644 (or 154627 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 505120671 is about 22474.8897883838. The cubic root of 505120671 is about 796.4008480603.

The spelling of 505120671 in words is "five hundred five million, one hundred twenty thousand, six hundred seventy-one".