64553161 has 2 divisors, whose sum is σ = 64553162. Its totient is φ = 64553160.

The previous prime is 64553143. The next prime is 64553173. The reversal of 64553161 is 16135546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35176761 + 29376400 = 5931^2 + 5420^2 .

It is a cyclic number.

It is not a de Polignac number, because 64553161 - 2¹⁷ = 64422089 is a prime.

It is a super-2 number, since 2×64553161² = 8334221190183842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64553141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32276580 + 32276581.

It is an arithmetic number, because the mean of its divisors is an integer number (32276581).

Almost surely, 2^64553161 is an apocalyptic number.

It is an amenable number.

64553161 is a deficient number, since it is larger than the sum of its proper divisors (1).

64553161 is an equidigital number, since it uses as much as digits as its factorization.

64553161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 64553161 is about 8034.4981797247. The cubic root of 64553161 is about 401.1491144289.

The spelling of 64553161 in words is "sixty-four million, five hundred fifty-three thousand, one hundred sixty-one".