53115215 has 8 divisors (see below), whose sum is σ = 63780288. Its totient is φ = 42464160.

The previous prime is 53115151. The next prime is 53115221. The reversal of 53115215 is 51251135.

It is a happy number.

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

It is not a de Polignac number, because 53115215 - 2⁶ = 53115151 is a prime.

It is a Duffinian number.

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, 8714 + ... + 13496.

It is an arithmetic number, because the mean of its divisors is an integer number (7972536).

Almost surely, 2^53115215 is an apocalyptic number.

53115215 is a deficient number, since it is larger than the sum of its proper divisors (10665073).

53115215 is a wasteful number, since it uses less digits than its factorization.

53115215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009.

The product of its digits is 750, while the sum is 23.

The square root of 53115215 is about 7288.0185921827. The cubic root of 53115215 is about 375.9005673962.

The spelling of 53115215 in words is "fifty-three million, one hundred fifteen thousand, two hundred fifteen".