53115265 has 16 divisors (see below), whose sum is σ = 74332800. Its totient is φ = 36420720.

The previous prime is 53115263. The next prime is 53115287. The reversal of 53115265 is 56251135.

It is not a de Polignac number, because 53115265 - 2¹ = 53115263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53115263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13771 + ... + 17200.

It is an arithmetic number, because the mean of its divisors is an integer number (4645800).

Almost surely, 2^53115265 is an apocalyptic number.

It is an amenable number.

53115265 is a deficient number, since it is larger than the sum of its proper divisors (21217535).

53115265 is an equidigital number, since it uses as much as digits as its factorization.

53115265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30997 (or 30983 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 53115265 is about 7288.0220224695. The cubic root of 53115265 is about 375.9006853475.

The spelling of 53115265 in words is "fifty-three million, one hundred fifteen thousand, two hundred sixty-five".