43455253 has 4 divisors (see below), whose sum is σ = 44953740. Its totient is φ = 41956768.

The previous prime is 43455197. The next prime is 43455259. The reversal of 43455253 is 35255434.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35255434 = 2 ⋅17627717.

It can be written as a sum of positive squares in 2 ways, for example, as 31114084 + 12341169 = 5578^2 + 3513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43455253 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 (43455259) 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, 749200 + ... + 749257.

It is an arithmetic number, because the mean of its divisors is an integer number (11238435).

Almost surely, 2^43455253 is an apocalyptic number.

It is an amenable number.

43455253 is a deficient number, since it is larger than the sum of its proper divisors (1498487).

43455253 is a wasteful number, since it uses less digits than its factorization.

43455253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498486.

The product of its digits is 36000, while the sum is 31.

The square root of 43455253 is about 6592.0598449953. The cubic root of 43455253 is about 351.5718499821.

The spelling of 43455253 in words is "forty-three million, four hundred fifty-five thousand, two hundred fifty-three".