452487781 has 2 divisors, whose sum is σ = 452487782. Its totient is φ = 452487780.

The previous prime is 452487769. The next prime is 452487787. The reversal of 452487781 is 187784254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452242756 + 245025 = 21266^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 452487781 - 2¹³ = 452479589 is a prime.

It is a super-2 number, since 2×452487781² = 409490383908607922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452487787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226243890 + 226243891.

It is an arithmetic number, because the mean of its divisors is an integer number (226243891).

Almost surely, 2^452487781 is an apocalyptic number.

It is an amenable number.

452487781 is a deficient number, since it is larger than the sum of its proper divisors (1).

452487781 is an equidigital number, since it uses as much as digits as its factorization.

452487781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501760, while the sum is 46.

The square root of 452487781 is about 21271.7601763465. The cubic root of 452487781 is about 767.7189936251.

The spelling of 452487781 in words is "four hundred fifty-two million, four hundred eighty-seven thousand, seven hundred eighty-one".