65315449 has 2 divisors, whose sum is σ = 65315450. Its totient is φ = 65315448.

The previous prime is 65315443. The next prime is 65315519. The reversal of 65315449 is 94451356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55279225 + 10036224 = 7435^2 + 3168^2 .

It is a cyclic number.

It is not a de Polignac number, because 65315449 - 2⁵ = 65315417 is a prime.

It is a super-2 number, since 2×65315449² = 8532215756143202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65315443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32657724 + 32657725.

It is an arithmetic number, because the mean of its divisors is an integer number (32657725).

Almost surely, 2^65315449 is an apocalyptic number.

It is an amenable number.

65315449 is a deficient number, since it is larger than the sum of its proper divisors (1).

65315449 is an equidigital number, since it uses as much as digits as its factorization.

65315449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 65315449 is about 8081.7973867204. The cubic root of 65315449 is about 402.7219541493.

The spelling of 65315449 in words is "sixty-five million, three hundred fifteen thousand, four hundred forty-nine".