53112729 has 8 divisors (see below), whose sum is σ = 70893792. Its totient is φ = 35370080.

The previous prime is 53112721. The next prime is 53112737. The reversal of 53112729 is 92721135.

It is an interprime number because it is at equal distance from previous prime (53112721) and next prime (53112737).

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 53112729 - 2³ = 53112721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53112696 and 53112705.

It is not an unprimeable number, because it can be changed into a prime (53112721) 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, 6204 + ... + 12029.

It is an arithmetic number, because the mean of its divisors is an integer number (8861724).

Almost surely, 2^53112729 is an apocalyptic number.

It is an amenable number.

53112729 is a deficient number, since it is larger than the sum of its proper divisors (17781063).

53112729 is a wasteful number, since it uses less digits than its factorization.

53112729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19207.

The product of its digits is 3780, while the sum is 30.

The square root of 53112729 is about 7287.8480362862. The cubic root of 53112729 is about 375.8947027653.

The spelling of 53112729 in words is "fifty-three million, one hundred twelve thousand, seven hundred twenty-nine".