55216297247 has 8 divisors (see below), whose sum is σ = 55274126544. Its totient is φ = 55158497728.

The previous prime is 55216297243. The next prime is 55216297259. The reversal of 55216297247 is 74279261255.

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 55216297247 - 2² = 55216297243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55216297195 and 55216297204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216297243) 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, 5917928 + ... + 5927250.

It is an arithmetic number, because the mean of its divisors is an integer number (6909265818).

Almost surely, 2^55216297247 is an apocalyptic number.

55216297247 is a deficient number, since it is larger than the sum of its proper divisors (57829297).

55216297247 is a wasteful number, since it uses less digits than its factorization.

55216297247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14889.

The product of its digits is 2116800, while the sum is 50.

The spelling of 55216297247 in words is "fifty-five billion, two hundred sixteen million, two hundred ninety-seven thousand, two hundred forty-seven".