55211506561147 has 8 divisors (see below), whose sum is σ = 56734016144832. Its totient is φ = 53690592067200.

The previous prime is 55211506561129. The next prime is 55211506561153. The reversal of 55211506561147 is 74116560511255.

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

It is a cyclic number.

It is not a de Polignac number, because 55211506561147 - 2³⁹ = 54661750747259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55211506561147.

It is not an unprimeable number, because it can be changed into a prime (55211506564147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398702254 + ... + 398840707.

It is an arithmetic number, because the mean of its divisors is an integer number (7091752018104).

Almost surely, 2^{55211506561147} is an apocalyptic number.

55211506561147 is a deficient number, since it is larger than the sum of its proper divisors (1522509583685).

55211506561147 is a wasteful number, since it uses less digits than its factorization.

55211506561147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797544869.

The product of its (nonzero) digits is 1260000, while the sum is 49.

The spelling of 55211506561147 in words is "fifty-five trillion, two hundred eleven billion, five hundred six million, five hundred sixty-one thousand, one hundred forty-seven".