55215104340 has 48 divisors (see below), whose sum is σ = 168657048000. Its totient is φ = 13385479680.

The previous prime is 55215104323. The next prime is 55215104341. The reversal of 55215104340 is 4340151255.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 55215104298 and 55215104307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55215104341) 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 15 ways as a sum of consecutive naturals, for example, 41828965 + ... + 41830284.

It is an arithmetic number, because the mean of its divisors is an integer number (3513688500).

Almost surely, 2^55215104340 is an apocalyptic number.

It is an amenable number.

55215104340 is an abundant number, since it is smaller than the sum of its proper divisors (113441943660).

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

55215104340 is a wasteful number, since it uses less digits than its factorization.

55215104340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83659272 (or 83659270 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 55215104340 its reverse (4340151255), we get a palindrome (59555255595).

The spelling of 55215104340 in words is "fifty-five billion, two hundred fifteen million, one hundred four thousand, three hundred forty".