452261561 has 4 divisors (see below), whose sum is σ = 460794852. Its totient is φ = 443728272.

The previous prime is 452261549. The next prime is 452261569. The reversal of 452261561 is 165162254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165162254 = 2 ⋅82581127.

It can be written as a sum of positive squares in 2 ways, for example, as 303421561 + 148840000 = 17419^2 + 12200^2 .

It is a cyclic number.

It is not a de Polignac number, because 452261561 - 2¹⁴ = 452245177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (452261569) 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, 4266566 + ... + 4266671.

It is an arithmetic number, because the mean of its divisors is an integer number (115198713).

Almost surely, 2^452261561 is an apocalyptic number.

It is an amenable number.

452261561 is a deficient number, since it is larger than the sum of its proper divisors (8533291).

452261561 is an equidigital number, since it uses as much as digits as its factorization.

452261561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533290.

The product of its digits is 14400, while the sum is 32.

The square root of 452261561 is about 21266.4421330885. The cubic root of 452261561 is about 767.5910326439.

The spelling of 452261561 in words is "four hundred fifty-two million, two hundred sixty-one thousand, five hundred sixty-one".