53129775 has 24 divisors (see below), whose sum is σ = 88632720. Its totient is φ = 28080640.

The previous prime is 53129773. The next prime is 53129807. The reversal of 53129775 is 57792135.

It is not a de Polignac number, because 53129775 - 2¹ = 53129773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53129771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5341 + ... + 11609.

It is an arithmetic number, because the mean of its divisors is an integer number (3693030).

Almost surely, 2^53129775 is an apocalyptic number.

53129775 is a deficient number, since it is larger than the sum of its proper divisors (35502945).

53129775 is a wasteful number, since it uses less digits than its factorization.

53129775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395 (or 6390 counting only the distinct ones).

The product of its digits is 66150, while the sum is 39.

The square root of 53129775 is about 7289.0174234941. The cubic root of 53129775 is about 375.9349116812.

The spelling of 53129775 in words is "fifty-three million, one hundred twenty-nine thousand, seven hundred seventy-five".