506165501 has 4 divisors (see below), whose sum is σ = 506533404. Its totient is φ = 505797600.

The previous prime is 506165483. The next prime is 506165537. The reversal of 506165501 is 105561605.

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

It can be written as a sum of positive squares in 2 ways, for example, as 321341476 + 184824025 = 17926^2 + 13595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506165501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506165201) 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 3 ways as a sum of consecutive naturals, for example, 181880 + ... + 184641.

It is an arithmetic number, because the mean of its divisors is an integer number (126633351).

Almost surely, 2^506165501 is an apocalyptic number.

It is an amenable number.

506165501 is a deficient number, since it is larger than the sum of its proper divisors (367903).

506165501 is a wasteful number, since it uses less digits than its factorization.

506165501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367902.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 506165501 is about 22498.1221660831. The cubic root of 506165501 is about 796.9495819078.

The spelling of 506165501 in words is "five hundred six million, one hundred sixty-five thousand, five hundred one".