53253445 has 12 divisors (see below), whose sum is σ = 74337804. Its totient is φ = 36516480.

The previous prime is 53253439. The next prime is 53253449. The reversal of 53253445 is 54435235.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6385729 + 46867716 = 2527^2 + 6846^2 .

It is not a de Polignac number, because 53253445 - 2³ = 53253437 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 (53253449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108436 + ... + 108925.

It is an arithmetic number, because the mean of its divisors is an integer number (6194817).

Almost surely, 2^53253445 is an apocalyptic number.

It is an amenable number.

53253445 is a deficient number, since it is larger than the sum of its proper divisors (21084359).

53253445 is a wasteful number, since it uses less digits than its factorization.

53253445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217380 (or 217373 counting only the distinct ones).

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

The square root of 53253445 is about 7297.4958033561. The cubic root of 53253445 is about 376.2263731333.

The spelling of 53253445 in words is "fifty-three million, two hundred fifty-three thousand, four hundred forty-five".