452115661 has 2 divisors, whose sum is σ = 452115662. Its totient is φ = 452115660.

The previous prime is 452115647. The next prime is 452115679. The reversal of 452115661 is 166511254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428738436 + 23377225 = 20706^2 + 4835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-452115661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452115361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226057830 + 226057831.

It is an arithmetic number, because the mean of its divisors is an integer number (226057831).

Almost surely, 2^452115661 is an apocalyptic number.

It is an amenable number.

452115661 is a deficient number, since it is larger than the sum of its proper divisors (1).

452115661 is an equidigital number, since it uses as much as digits as its factorization.

452115661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 452115661 is about 21263.0115693897. The cubic root of 452115661 is about 767.5084819061.

The spelling of 452115661 in words is "four hundred fifty-two million, one hundred fifteen thousand, six hundred sixty-one".