15530055100 has 108 divisors (see below), whose sum is σ = 39345294240. Its totient is φ = 5305171200.

The previous prime is 15530055091. The next prime is 15530055157. The reversal of 15530055100 is 155003551.

It is a super-2 number, since 2×15530055100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1371261 + ... + 1382539.

It is an arithmetic number, because the mean of its divisors is an integer number (364308280).

Almost surely, 2^15530055100 is an apocalyptic number.

15530055100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15530055100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19672647120).

15530055100 is an abundant number, since it is smaller than the sum of its proper divisors (23815239140).

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

15530055100 is a wasteful number, since it uses less digits than its factorization.

15530055100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11588 (or 11574 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 25.

Adding to 15530055100 its reverse (155003551), we get a palindrome (15685058651).

The spelling of 15530055100 in words is "fifteen billion, five hundred thirty million, fifty-five thousand, one hundred".