64553473 has 2 divisors, whose sum is σ = 64553474. Its totient is φ = 64553472.

The previous prime is 64553459. The next prime is 64553477. The reversal of 64553473 is 37435546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62995969 + 1557504 = 7937^2 + 1248^2 .

It is a cyclic number.

It is not a de Polignac number, because 64553473 - 2²¹ = 62456321 is a prime.

It is not a weakly prime, because it can be changed into another prime (64553477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32276736 + 32276737.

It is an arithmetic number, because the mean of its divisors is an integer number (32276737).

Almost surely, 2^64553473 is an apocalyptic number.

It is an amenable number.

64553473 is a deficient number, since it is larger than the sum of its proper divisors (1).

64553473 is an equidigital number, since it uses as much as digits as its factorization.

64553473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 37.

The square root of 64553473 is about 8034.5175959730. The cubic root of 64553473 is about 401.1497607093.

The spelling of 64553473 in words is "sixty-four million, five hundred fifty-three thousand, four hundred seventy-three".