55425214521 has 16 divisors (see below), whose sum is σ = 82348075200. Its totient is φ = 36843652224.

The previous prime is 55425214499. The next prime is 55425214531. The reversal of 55425214521 is 12541252455.

55425214521 is a `hidden beast` number, since 5 + 542 + 52 + 1 + 45 + 21 = 666.

It is not a de Polignac number, because 55425214521 - 2¹⁰ = 55425213497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55425214531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2948536 + ... + 2967273.

It is an arithmetic number, because the mean of its divisors is an integer number (5146754700).

Almost surely, 2^55425214521 is an apocalyptic number.

It is an amenable number.

55425214521 is a deficient number, since it is larger than the sum of its proper divisors (26922860679).

55425214521 is a wasteful number, since it uses less digits than its factorization.

55425214521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916165 (or 5916159 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

Adding to 55425214521 its reverse (12541252455), we get a palindrome (67966466976).

The spelling of 55425214521 in words is "fifty-five billion, four hundred twenty-five million, two hundred fourteen thousand, five hundred twenty-one".