55220151545 has 8 divisors (see below), whose sum is σ = 71361426696. Its totient is φ = 40777958016.

The previous prime is 55220151517. The next prime is 55220151563. The reversal of 55220151545 is 54515102255.

It can be written as a sum of positive squares in 4 ways, for example, as 3638019856 + 51582131689 = 60316^2 + 227117^2 .

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 55220151545 - 2¹⁸ = 55219889401 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 424770332 + ... + 424770461.

It is an arithmetic number, because the mean of its divisors is an integer number (8920178337).

Almost surely, 2^55220151545 is an apocalyptic number.

It is an amenable number.

55220151545 is a deficient number, since it is larger than the sum of its proper divisors (16141275151).

55220151545 is a wasteful number, since it uses less digits than its factorization.

55220151545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849540811.

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 55220151545 in words is "fifty-five billion, two hundred twenty million, one hundred fifty-one thousand, five hundred forty-five".