53139087 has 12 divisors (see below), whose sum is σ = 76892400. Its totient is φ = 35363328.

The previous prime is 53139077. The next prime is 53139101. The reversal of 53139087 is 78093135.

It is a de Polignac number, because none of the positive numbers 2^k-53139087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53139017) 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, 463 + ... + 10319.

It is an arithmetic number, because the mean of its divisors is an integer number (6407700).

Almost surely, 2^53139087 is an apocalyptic number.

53139087 is a deficient number, since it is larger than the sum of its proper divisors (23753313).

53139087 is a wasteful number, since it uses less digits than its factorization.

53139087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462 (or 10459 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 53139087 is about 7289.6561647310. The cubic root of 53139087 is about 375.9568736375.

It can be divided in two parts, 5313 and 9087, that added together give a square (14400 = 120²).

The spelling of 53139087 in words is "fifty-three million, one hundred thirty-nine thousand, eighty-seven".