64511253 has 6 divisors (see below), whose sum is σ = 93182934. Its totient is φ = 43007496.

The previous prime is 64511231. The next prime is 64511261. The reversal of 64511253 is 35211546.

64511253 is a `hidden beast` number, since 645 + 1 + 12 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53100369 + 11410884 = 7287^2 + 3378^2 .

It is not a de Polignac number, because 64511253 - 2⁸ = 64510997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64511273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3583950 + ... + 3583967.

It is an arithmetic number, because the mean of its divisors is an integer number (15530489).

Almost surely, 2^64511253 is an apocalyptic number.

It is an amenable number.

64511253 is a deficient number, since it is larger than the sum of its proper divisors (28671681).

64511253 is a wasteful number, since it uses less digits than its factorization.

64511253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167923 (or 7167920 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 64511253 is about 8031.8897527294. The cubic root of 64511253 is about 401.0622867862.

Adding to 64511253 its reverse (35211546), we get a palindrome (99722799).

The spelling of 64511253 in words is "sixty-four million, five hundred eleven thousand, two hundred fifty-three".