55161051100 has 18 divisors (see below), whose sum is σ = 119699481104. Its totient is φ = 22064420400.

The previous prime is 55161051079. The next prime is 55161051107. The reversal of 55161051100 is 115016155.

55161051100 is nontrivially palindromic in base 16.

It is a super-2 number, since 2×55161051100² (a number of 22 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 not an unprimeable number, because it can be changed into a prime (55161051107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275805156 + ... + 275805355.

Almost surely, 2^55161051100 is an apocalyptic number.

55161051100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55161051100 is an abundant number, since it is smaller than the sum of its proper divisors (64538430004).

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

55161051100 is a wasteful number, since it uses less digits than its factorization.

55161051100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551610525 (or 551610518 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

Adding to 55161051100 its reverse (115016155), we get a palindrome (55276067255).

The spelling of 55161051100 in words is "fifty-five billion, one hundred sixty-one million, fifty-one thousand, one hundred".