453161561 has 4 divisors (see below), whose sum is σ = 464214324. Its totient is φ = 442108800.

The previous prime is 453161557. The next prime is 453161573. The reversal of 453161561 is 165161354.

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 235776025 + 217385536 = 15355^2 + 14744^2 .

It is a cyclic number.

It is not a de Polignac number, because 453161561 - 2² = 453161557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (453161531) 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, 5526320 + ... + 5526401.

It is an arithmetic number, because the mean of its divisors is an integer number (116053581).

Almost surely, 2^453161561 is an apocalyptic number.

453161561 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

453161561 is a deficient number, since it is larger than the sum of its proper divisors (11052763).

453161561 is a wasteful number, since it uses less digits than its factorization.

453161561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052762.

The product of its digits is 10800, while the sum is 32.

The square root of 453161561 is about 21287.5917144237. The cubic root of 453161561 is about 768.0998637005.

The spelling of 453161561 in words is "four hundred fifty-three million, one hundred sixty-one thousand, five hundred sixty-one".