53305615 has 16 divisors (see below), whose sum is σ = 70968960. Its totient is φ = 38108320.

The previous prime is 53305613. The next prime is 53305619. The reversal of 53305615 is 51650335.

It is a happy number.

53305615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53305615 - 2¹ = 53305613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53305613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4969 + ... + 11458.

It is an arithmetic number, because the mean of its divisors is an integer number (4435560).

Almost surely, 2^53305615 is an apocalyptic number.

53305615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53305615 is a deficient number, since it is larger than the sum of its proper divisors (17663345).

53305615 is a wasteful number, since it uses less digits than its factorization.

53305615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16502.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 53305615 is about 7301.0694422119. The cubic root of 53305615 is about 376.3491903764.

The spelling of 53305615 in words is "fifty-three million, three hundred five thousand, six hundred fifteen".