55451363612421 has 8 divisors (see below), whose sum is σ = 84497315980864. Its totient is φ = 31686493492800.

The previous prime is 55451363612363. The next prime is 55451363612423. The reversal of 55451363612421 is 12421636315455.

It is a happy number.

55451363612421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55451363612421 - 2¹¹ = 55451363610373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55451363612423) 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 7 ways as a sum of consecutive naturals, for example, 1320270562180 + ... + 1320270562221.

It is an arithmetic number, because the mean of its divisors is an integer number (10562164497608).

Almost surely, 2^{55451363612421} is an apocalyptic number.

It is an amenable number.

55451363612421 is a deficient number, since it is larger than the sum of its proper divisors (29045952368443).

55451363612421 is a wasteful number, since it uses less digits than its factorization.

55451363612421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640541124411.

The product of its digits is 2592000, while the sum is 48.

Adding to 55451363612421 its reverse (12421636315455), we get a palindrome (67872999927876).

The spelling of 55451363612421 in words is "fifty-five trillion, four hundred fifty-one billion, three hundred sixty-three million, six hundred twelve thousand, four hundred twenty-one".