452117621 has 2 divisors, whose sum is σ = 452117622. Its totient is φ = 452117620.

The previous prime is 452117593. The next prime is 452117629. The reversal of 452117621 is 126711254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325802500 + 126315121 = 18050^2 + 11239^2 .

It is a cyclic number.

It is not a de Polignac number, because 452117621 - 2⁶ = 452117557 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (452117629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226058810 + 226058811.

It is an arithmetic number, because the mean of its divisors is an integer number (226058811).

Almost surely, 2^452117621 is an apocalyptic number.

It is an amenable number.

452117621 is a deficient number, since it is larger than the sum of its proper divisors (1).

452117621 is an equidigital number, since it uses as much as digits as its factorization.

452117621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 452117621 is about 21263.0576587658. The cubic root of 452117621 is about 767.5095909987.

Adding to 452117621 its reverse (126711254), we get a palindrome (578828875).

The spelling of 452117621 in words is "four hundred fifty-two million, one hundred seventeen thousand, six hundred twenty-one".