64071253 has 4 divisors (see below), whose sum is σ = 64693408. Its totient is φ = 63449100.

The previous prime is 64071251. The next prime is 64071257. The reversal of 64071253 is 35217046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35217046 = 2 ⋅17608523.

It is a cyclic number.

It is not a de Polignac number, because 64071253 - 2¹ = 64071251 is a prime.

It is a super-3 number, since 3×64071253³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64071251) 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, 310923 + ... + 311128.

It is an arithmetic number, because the mean of its divisors is an integer number (16173352).

Almost surely, 2^64071253 is an apocalyptic number.

It is an amenable number.

64071253 is a deficient number, since it is larger than the sum of its proper divisors (622155).

64071253 is a wasteful number, since it uses less digits than its factorization.

64071253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622154.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 64071253 is about 8004.4520736900. The cubic root of 64071253 is about 400.1483886952.

Adding to 64071253 its reverse (35217046), we get a palindrome (99288299).

The spelling of 64071253 in words is "sixty-four million, seventy-one thousand, two hundred fifty-three".