53012709 has 6 divisors (see below), whose sum is σ = 76573926. Its totient is φ = 35341800.

The previous prime is 53012689. The next prime is 53012711. The reversal of 53012709 is 90721035.

53012709 is a `hidden beast` number, since 530 + 127 + 0 + 9 = 666.

53012709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52056225 + 956484 = 7215^2 + 978^2 .

It is not a de Polignac number, because 53012709 - 2⁷ = 53012581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53012719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2945142 + ... + 2945159.

It is an arithmetic number, because the mean of its divisors is an integer number (12762321).

Almost surely, 2^53012709 is an apocalyptic number.

It is an amenable number.

53012709 is a deficient number, since it is larger than the sum of its proper divisors (23561217).

53012709 is a wasteful number, since it uses less digits than its factorization.

53012709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890307 (or 5890304 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 53012709 is about 7280.9826946642. The cubic root of 53012709 is about 375.6585973217.

The spelling of 53012709 in words is "fifty-three million, twelve thousand, seven hundred nine".