506455961 has 4 divisors (see below), whose sum is σ = 552497424. Its totient is φ = 460414500.

The previous prime is 506455949. The next prime is 506455987. The reversal of 506455961 is 169554605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 506455961 - 2¹⁸ = 506193817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506455921) 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, 23020715 + ... + 23020736.

It is an arithmetic number, because the mean of its divisors is an integer number (138124356).

Almost surely, 2^506455961 is an apocalyptic number.

It is an amenable number.

506455961 is a deficient number, since it is larger than the sum of its proper divisors (46041463).

506455961 is a wasteful number, since it uses less digits than its factorization.

506455961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46041462.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 506455961 is about 22504.5764456921. The cubic root of 506455961 is about 797.1019943177.

The spelling of 506455961 in words is "five hundred six million, four hundred fifty-five thousand, nine hundred sixty-one".