63489451 has 2 divisors, whose sum is σ = 63489452. Its totient is φ = 63489450.

The previous prime is 63489427. The next prime is 63489467. The reversal of 63489451 is 15498436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63489451 - 2¹³ = 63481259 is a prime.

It is not a weakly prime, because it can be changed into another prime (63483451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31744725 + 31744726.

It is an arithmetic number, because the mean of its divisors is an integer number (31744726).

Almost surely, 2^63489451 is an apocalyptic number.

63489451 is a deficient number, since it is larger than the sum of its proper divisors (1).

63489451 is an equidigital number, since it uses as much as digits as its factorization.

63489451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 63489451 is about 7968.0267946337. The cubic root of 63489451 is about 398.9335153031.

The spelling of 63489451 in words is "sixty-three million, four hundred eighty-nine thousand, four hundred fifty-one".