65345553 has 48 divisors (see below), whose sum is σ = 121255680. Its totient is φ = 32959872.

The previous prime is 65345531. The next prime is 65345563. The reversal of 65345553 is 35554356.

65345553 is a `hidden beast` number, since 65 + 3 + 45 + 553 = 666.

It is not a de Polignac number, because 65345553 - 2¹² = 65341457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65345563) 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 in 47 ways as a sum of consecutive naturals, for example, 17103 + ... + 20571.

It is an arithmetic number, because the mean of its divisors is an integer number (2526160).

Almost surely, 2^65345553 is an apocalyptic number.

65345553 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65345553 is a deficient number, since it is larger than the sum of its proper divisors (55910127).

65345553 is a wasteful number, since it uses less digits than its factorization.

65345553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518 (or 3515 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The square root of 65345553 is about 8083.6596291531. The cubic root of 65345553 is about 402.7838163876.

The spelling of 65345553 in words is "sixty-five million, three hundred forty-five thousand, five hundred fifty-three".