53561421103 has 16 divisors (see below), whose sum is σ = 55650460320. Its totient is φ = 51522471936.

The previous prime is 53561421077. The next prime is 53561421107. The reversal of 53561421103 is 30112416535.

53561421103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-53561421103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53561421107) 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, 501403 + ... + 598771.

It is an arithmetic number, because the mean of its divisors is an integer number (3478153770).

Almost surely, 2^53561421103 is an apocalyptic number.

53561421103 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

53561421103 is a deficient number, since it is larger than the sum of its proper divisors (2089039217).

53561421103 is a wasteful number, since it uses less digits than its factorization.

53561421103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97626.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 53561421103 its reverse (30112416535), we get a palindrome (83673837638).

The spelling of 53561421103 in words is "fifty-three billion, five hundred sixty-one million, four hundred twenty-one thousand, one hundred three".