64452253 has 4 divisors (see below), whose sum is σ = 68243580. Its totient is φ = 60660928.

The previous prime is 64452251. The next prime is 64452281. The reversal of 64452253 is 35225446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35225446 = 2 ⋅17612723.

It can be written as a sum of positive squares in 2 ways, for example, as 35259844 + 29192409 = 5938^2 + 5403^2 .

It is a cyclic number.

It is not a de Polignac number, because 64452253 - 2¹ = 64452251 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 (64452251) 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, 1895638 + ... + 1895671.

It is an arithmetic number, because the mean of its divisors is an integer number (17060895).

Almost surely, 2^64452253 is an apocalyptic number.

It is an amenable number.

64452253 is a deficient number, since it is larger than the sum of its proper divisors (3791327).

64452253 is a wasteful number, since it uses less digits than its factorization.

64452253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791326.

The product of its digits is 28800, while the sum is 31.

The square root of 64452253 is about 8028.2160533957. The cubic root of 64452253 is about 400.9399830991.

Adding to 64452253 its reverse (35225446), we get a palindrome (99677699).

The spelling of 64452253 in words is "sixty-four million, four hundred fifty-two thousand, two hundred fifty-three".