53451603563 has 4 divisors (see below), whose sum is σ = 53463250848. Its totient is φ = 53439956280.

The previous prime is 53451603451. The next prime is 53451603581. The reversal of 53451603563 is 36530615435.

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 53451603563 - 2⁸ = 53451603307 is a prime.

It is a super-2 number, since 2×53451603563² (a number of 22 digits) contains 22 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 53451603563.

It is not an unprimeable number, because it can be changed into a prime (53451603593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5816756 + ... + 5825937.

It is an arithmetic number, because the mean of its divisors is an integer number (13365812712).

Almost surely, 2^53451603563 is an apocalyptic number.

53451603563 is a deficient number, since it is larger than the sum of its proper divisors (11647285).

53451603563 is a wasteful number, since it uses less digits than its factorization.

53451603563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11647284.

The product of its (nonzero) digits is 486000, while the sum is 41.

The spelling of 53451603563 in words is "fifty-three billion, four hundred fifty-one million, six hundred three thousand, five hundred sixty-three".