64540053 has 12 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 42507816.

The previous prime is 64540043. The next prime is 64540057. The reversal of 64540053 is 35004546.

It is not a de Polignac number, because 64540053 - 2⁴ = 64540037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64539999 and 64540026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64540057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42453 + ... + 43946.

It is an arithmetic number, because the mean of its divisors is an integer number (7862400).

Almost surely, 2^64540053 is an apocalyptic number.

It is an amenable number.

64540053 is a deficient number, since it is larger than the sum of its proper divisors (29808747).

64540053 is a wasteful number, since it uses less digits than its factorization.

64540053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86488 (or 86485 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 64540053 is about 8033.6824059705. The cubic root of 64540053 is about 401.1219604860.

Adding to 64540053 its reverse (35004546), we get a palindrome (99544599).

The spelling of 64540053 in words is "sixty-four million, five hundred forty thousand, fifty-three".