55321235040 has 96 divisors (see below), whose sum is σ = 175331229696. Its totient is φ = 14661803520.

The previous prime is 55321235023. The next prime is 55321235059. The reversal of 55321235040 is 4053212355.

It is a tau number, because it is divible by the number of its divisors (96).

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 = 55321234989 and 55321235007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275296 + ... + 431775.

It is an arithmetic number, because the mean of its divisors is an integer number (1826366976).

Almost surely, 2^55321235040 is an apocalyptic number.

It is an amenable number.

55321235040 is an abundant number, since it is smaller than the sum of its proper divisors (120009994656).

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

55321235040 is a wasteful number, since it uses less digits than its factorization.

55321235040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707252 (or 707244 counting only the distinct ones).

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

Adding to 55321235040 its reverse (4053212355), we get a palindrome (59374447395).

The spelling of 55321235040 in words is "fifty-five billion, three hundred twenty-one million, two hundred thirty-five thousand, forty".