63515253 has 16 divisors (see below), whose sum is σ = 86800896. Its totient is φ = 41296320.

The previous prime is 63515239. The next prime is 63515261. The reversal of 63515253 is 35251536.

It is not a de Polignac number, because 63515253 - 2¹³ = 63507061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63515253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63515293) 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, 27676 + ... + 29882.

It is an arithmetic number, because the mean of its divisors is an integer number (5425056).

Almost surely, 2^63515253 is an apocalyptic number.

It is an amenable number.

63515253 is a deficient number, since it is larger than the sum of its proper divisors (23285643).

63515253 is a wasteful number, since it uses less digits than its factorization.

63515253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444.

The product of its digits is 13500, while the sum is 30.

The square root of 63515253 is about 7969.6457261286. The cubic root of 63515253 is about 398.9875499410.

Adding to 63515253 its reverse (35251536), we get a palindrome (98766789).

The spelling of 63515253 in words is "sixty-three million, five hundred fifteen thousand, two hundred fifty-three".