55350310440 has 64 divisors (see below), whose sum is σ = 169183987200. Its totient is φ = 14481588992.

The previous prime is 55350310381. The next prime is 55350310441. The reversal of 55350310440 is 4401305355.

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 = 55350310398 and 55350310407.

It is not an unprimeable number, because it can be changed into a prime (55350310441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4345080 + ... + 4357799.

It is an arithmetic number, because the mean of its divisors is an integer number (2643499800).

Almost surely, 2^55350310440 is an apocalyptic number.

It is an amenable number.

55350310440 is an abundant number, since it is smaller than the sum of its proper divisors (113833676760).

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

55350310440 is a wasteful number, since it uses less digits than its factorization.

55350310440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8702946 (or 8702942 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 55350310440 its reverse (4401305355), we get a palindrome (59751615795).

The spelling of 55350310440 in words is "fifty-five billion, three hundred fifty million, three hundred ten thousand, four hundred forty".