53664503 has 4 divisors (see below), whose sum is σ = 55395648. Its totient is φ = 51933360.

The previous prime is 53664439. The next prime is 53664511. The reversal of 53664503 is 30546635.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53664503 - 2⁶ = 53664439 is a prime.

It is a super-3 number, since 3×53664503³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53664503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53664593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865526 + ... + 865587.

It is an arithmetic number, because the mean of its divisors is an integer number (13848912).

Almost surely, 2^53664503 is an apocalyptic number.

53664503 is a deficient number, since it is larger than the sum of its proper divisors (1731145).

53664503 is a wasteful number, since it uses less digits than its factorization.

53664503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731144.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 53664503 is about 7325.6059817601. The cubic root of 53664503 is about 377.1919109598.

The spelling of 53664503 in words is "fifty-three million, six hundred sixty-four thousand, five hundred three".