53112745 has 8 divisors (see below), whose sum is σ = 72840384. Its totient is φ = 36420144.

The previous prime is 53112739. The next prime is 53112749. The reversal of 53112745 is 54721135.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53112745 - 2³ = 53112737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53112749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758719 + ... + 758788.

It is an arithmetic number, because the mean of its divisors is an integer number (9105048).

Almost surely, 2^53112745 is an apocalyptic number.

It is an amenable number.

53112745 is a deficient number, since it is larger than the sum of its proper divisors (19727639).

53112745 is a wasteful number, since it uses less digits than its factorization.

53112745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517519.

The product of its digits is 4200, while the sum is 28.

The square root of 53112745 is about 7287.8491340038. The cubic root of 53112745 is about 375.8947405109.

The spelling of 53112745 in words is "fifty-three million, one hundred twelve thousand, seven hundred forty-five".