55861225648272 has 240 divisors, whose sum is σ = 178527052394496. Its totient is φ = 16150863456000.

The previous prime is 55861225648271. The next prime is 55861225648301. The reversal of 55861225648272 is 27284652216855.

55861225648272 is a `hidden beast` number, since 5 + 5 + 8 + 61 + 2 + 2 + 564 + 8 + 2 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (55861225648271) 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 47 ways as a sum of consecutive naturals, for example, 4524958 + ... + 11497725.

Almost surely, 2^{55861225648272} is an apocalyptic number.

It is an amenable number.

55861225648272 is an abundant number, since it is smaller than the sum of its proper divisors (122665826746224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55861225648272 is a wasteful number, since it uses less digits than its factorization.

55861225648272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022810 (or 16022801 counting only the distinct ones).

The product of its digits is 129024000, while the sum is 63.

The spelling of 55861225648272 in words is "fifty-five trillion, eight hundred sixty-one billion, two hundred twenty-five million, six hundred forty-eight thousand, two hundred seventy-two".