55621012654 has 8 divisors (see below), whose sum is σ = 87058976400. Its totient is φ = 26601353856.

The previous prime is 55621012591. The next prime is 55621012669. The reversal of 55621012654 is 45621012655.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 604576179 + ... + 604576270.

It is an arithmetic number, because the mean of its divisors is an integer number (10882372050).

Almost surely, 2^55621012654 is an apocalyptic number.

55621012654 is a deficient number, since it is larger than the sum of its proper divisors (31437963746).

55621012654 is a wasteful number, since it uses less digits than its factorization.

55621012654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209152474.

The product of its (nonzero) digits is 72000, while the sum is 37.

Subtracting from 55621012654 its reverse (45621012655), we obtain a palindrome (9999999999).

The spelling of 55621012654 in words is "fifty-five billion, six hundred twenty-one million, twelve thousand, six hundred fifty-four".