55215130445 has 8 divisors (see below), whose sum is σ = 66287066136. Its totient is φ = 44152831296.

The previous prime is 55215130427. The next prime is 55215130447. The reversal of 55215130445 is 54403151255.

It can be written as a sum of positive squares in 4 ways, for example, as 16016674249 + 39198456196 = 126557^2 + 197986^2 .

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 55215130445 - 2⁸ = 55215130189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55215130447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2396522 + ... + 2419451.

It is an arithmetic number, because the mean of its divisors is an integer number (8285883267).

Almost surely, 2^55215130445 is an apocalyptic number.

It is an amenable number.

55215130445 is a deficient number, since it is larger than the sum of its proper divisors (11071935691).

55215130445 is a wasteful number, since it uses less digits than its factorization.

55215130445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818271.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 55215130445 in words is "fifty-five billion, two hundred fifteen million, one hundred thirty thousand, four hundred forty-five".