53185239 has 12 divisors (see below), whose sum is σ = 76887096. Its totient is φ = 35427312.

The previous prime is 53185219. The next prime is 53185259. The reversal of 53185239 is 93258135.

It is an interprime number because it is at equal distance from previous prime (53185219) and next prime (53185259).

It is not a de Polignac number, because 53185239 - 2⁸ = 53184983 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53185219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17329 + ... + 20165.

It is an arithmetic number, because the mean of its divisors is an integer number (6407258).

Almost surely, 2^53185239 is an apocalyptic number.

53185239 is a deficient number, since it is larger than the sum of its proper divisors (23701857).

53185239 is a wasteful number, since it uses less digits than its factorization.

53185239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4926 (or 4923 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 53185239 is about 7292.8210590964. The cubic root of 53185239 is about 376.0656833154.

The spelling of 53185239 in words is "fifty-three million, one hundred eighty-five thousand, two hundred thirty-nine".