64513253 has 12 divisors (see below), whose sum is σ = 75190752. Its totient is φ = 55190520.

The previous prime is 64513247. The next prime is 64513259. The reversal of 64513253 is 35231546.

It is an interprime number because it is at equal distance from previous prime (64513247) and next prime (64513259).

It is not a de Polignac number, because 64513253 - 2¹² = 64509157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64513259) 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, 34718 + ... + 36528.

It is an arithmetic number, because the mean of its divisors is an integer number (6265896).

Almost surely, 2^64513253 is an apocalyptic number.

It is an amenable number.

64513253 is a deficient number, since it is larger than the sum of its proper divisors (10677499).

64513253 is a wasteful number, since it uses less digits than its factorization.

64513253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2545 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 64513253 is about 8032.0142554654. The cubic root of 64513253 is about 401.0664313670.

Adding to 64513253 its reverse (35231546), we get a palindrome (99744799).

The spelling of 64513253 in words is "sixty-four million, five hundred thirteen thousand, two hundred fifty-three".