51230204553 has 16 divisors (see below), whose sum is σ = 74553702336. Its totient is φ = 31033175040.

The previous prime is 51230204539. The next prime is 51230204569. The reversal of 51230204553 is 35540203215.

It is not a de Polignac number, because 51230204553 - 2⁶ = 51230204489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51230204553.

It is not an unprimeable number, because it can be changed into a prime (51230274553) 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, 318276 + ... + 451397.

It is an arithmetic number, because the mean of its divisors is an integer number (4659606396).

Almost surely, 2^51230204553 is an apocalyptic number.

It is an amenable number.

51230204553 is a deficient number, since it is larger than the sum of its proper divisors (23323497783).

51230204553 is a wasteful number, since it uses less digits than its factorization.

51230204553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771704.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 51230204553 its reverse (35540203215), we get a palindrome (86770407768).

The spelling of 51230204553 in words is "fifty-one billion, two hundred thirty million, two hundred four thousand, five hundred fifty-three".