53128615 has 8 divisors (see below), whose sum is σ = 64835280. Its totient is φ = 41782272.

The previous prime is 53128601. The next prime is 53128627. The reversal of 53128615 is 51682135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53128615 - 2⁷ = 53128487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89754 + ... + 90343.

It is an arithmetic number, because the mean of its divisors is an integer number (8104410).

Almost surely, 2^53128615 is an apocalyptic number.

53128615 is a deficient number, since it is larger than the sum of its proper divisors (11706665).

53128615 is a wasteful number, since it uses less digits than its factorization.

53128615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180161.

The product of its digits is 7200, while the sum is 31.

The square root of 53128615 is about 7288.9378512922. The cubic root of 53128615 is about 375.9321756907.

The spelling of 53128615 in words is "fifty-three million, one hundred twenty-eight thousand, six hundred fifteen".