53145663 has 8 divisors (see below), whose sum is σ = 73941888. Its totient is φ = 33889944.

The previous prime is 53145649. The next prime is 53145667. The reversal of 53145663 is 36654135.

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

It is a de Polignac number, because none of the positive numbers 2^k-53145663 is a prime.

It is a super-2 number, since 2×53145663² = 5648922991419138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385045 + ... + 385182.

It is an arithmetic number, because the mean of its divisors is an integer number (9242736).

Almost surely, 2^53145663 is an apocalyptic number.

53145663 is a deficient number, since it is larger than the sum of its proper divisors (20796225).

53145663 is a wasteful number, since it uses less digits than its factorization.

53145663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770253.

The product of its digits is 32400, while the sum is 33.

The square root of 53145663 is about 7290.1072008579. The cubic root of 53145663 is about 375.9723813085.

Adding to 53145663 its reverse (36654135), we get a palindrome (89799798).

The spelling of 53145663 in words is "fifty-three million, one hundred forty-five thousand, six hundred sixty-three".