53135787 has 4 divisors (see below), whose sum is σ = 70847720. Its totient is φ = 35423856.

The previous prime is 53135779. The next prime is 53135791. The reversal of 53135787 is 78753135.

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

It is not a de Polignac number, because 53135787 - 2³ = 53135779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53135707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8855962 + ... + 8855967.

It is an arithmetic number, because the mean of its divisors is an integer number (17711930).

Almost surely, 2^53135787 is an apocalyptic number.

53135787 is a deficient number, since it is larger than the sum of its proper divisors (17711933).

53135787 is a wasteful number, since it uses less digits than its factorization.

53135787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17711932.

The product of its digits is 88200, while the sum is 39.

The square root of 53135787 is about 7289.4298130924. The cubic root of 53135787 is about 375.9490910213.

The spelling of 53135787 in words is "fifty-three million, one hundred thirty-five thousand, seven hundred eighty-seven".