53515015 has 8 divisors (see below), whose sum is σ = 64451520. Its totient is φ = 42656352.

The previous prime is 53515013. The next prime is 53515027. The reversal of 53515015 is 51051535.

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 53515015 - 2¹ = 53515013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53515013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17935 + ... + 20704.

It is an arithmetic number, because the mean of its divisors is an integer number (8056440).

Almost surely, 2^53515015 is an apocalyptic number.

53515015 is a deficient number, since it is larger than the sum of its proper divisors (10936505).

53515015 is a wasteful number, since it uses less digits than its factorization.

53515015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38921.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 53515015 is about 7315.3957514273. The cubic root of 53515015 is about 376.8413496115.

The spelling of 53515015 in words is "fifty-three million, five hundred fifteen thousand, fifteen".