452561381 has 2 divisors, whose sum is σ = 452561382. Its totient is φ = 452561380.

The previous prime is 452561371. The next prime is 452561387. The reversal of 452561381 is 183165254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253892356 + 198669025 = 15934^2 + 14095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-452561381 is a prime.

It is a super-2 number, since 2×452561381² = 409623607145254322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452561387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226280690 + 226280691.

It is an arithmetic number, because the mean of its divisors is an integer number (226280691).

Almost surely, 2^452561381 is an apocalyptic number.

It is an amenable number.

452561381 is a deficient number, since it is larger than the sum of its proper divisors (1).

452561381 is an equidigital number, since it uses as much as digits as its factorization.

452561381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The square root of 452561381 is about 21273.4900991821. The cubic root of 452561381 is about 767.7606161521.

The spelling of 452561381 in words is "four hundred fifty-two million, five hundred sixty-one thousand, three hundred eighty-one".