53247445 has 4 divisors (see below), whose sum is σ = 63896940. Its totient is φ = 42597952.

The previous prime is 53247437. The next prime is 53247511. The reversal of 53247445 is 54474235.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7360369 + 45887076 = 2713^2 + 6774^2 .

It is a cyclic number.

It is not a de Polignac number, because 53247445 - 2³ = 53247437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53247445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5324740 + ... + 5324749.

It is an arithmetic number, because the mean of its divisors is an integer number (15974235).

Almost surely, 2^53247445 is an apocalyptic number.

It is an amenable number.

53247445 is a deficient number, since it is larger than the sum of its proper divisors (10649495).

53247445 is a wasteful number, since it uses less digits than its factorization.

53247445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649494.

The product of its digits is 67200, while the sum is 34.

The square root of 53247445 is about 7297.0846918478. The cubic root of 53247445 is about 376.2122429487.

It can be divided in two parts, 5324 and 7445, that added together give a square (12769 = 113²).

The spelling of 53247445 in words is "fifty-three million, two hundred forty-seven thousand, four hundred forty-five".