64575253 has 4 divisors (see below), whose sum is σ = 65793708. Its totient is φ = 63356800.

The previous prime is 64575233. The next prime is 64575307. The reversal of 64575253 is 35257546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35257546 = 2 ⋅17628773.

It can be written as a sum of positive squares in 2 ways, for example, as 15547249 + 49028004 = 3943^2 + 7002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64575253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64575233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609148 + ... + 609253.

It is an arithmetic number, because the mean of its divisors is an integer number (16448427).

Almost surely, 2^64575253 is an apocalyptic number.

It is an amenable number.

64575253 is a deficient number, since it is larger than the sum of its proper divisors (1218455).

64575253 is a wasteful number, since it uses less digits than its factorization.

64575253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218454.

The product of its digits is 126000, while the sum is 37.

The square root of 64575253 is about 8035.8728835143. The cubic root of 64575253 is about 401.1948709048.

The spelling of 64575253 in words is "sixty-four million, five hundred seventy-five thousand, two hundred fifty-three".