1055501100 has 216 divisors, whose sum is σ = 3534148800. Its totient is φ = 262563840.

The previous prime is 1055501099. The next prime is 1055501101. The reversal of 1055501100 is 11055501.

1055501100 is a `hidden beast` number, since 1 + 0 + 5 + 550 + 110 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1055501099) and next prime (1055501101).

It is a super-2 number, since 2×1055501100² = 2228165144202420000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1055501101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2279469 + ... + 2279931.

It is an arithmetic number, because the mean of its divisors is an integer number (16361800).

Almost surely, 2^1055501100 is an apocalyptic number.

1055501100 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 1055501100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767074400).

1055501100 is an abundant number, since it is smaller than the sum of its proper divisors (2478647700).

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

1055501100 is a wasteful number, since it uses less digits than its factorization.

1055501100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 1055501100 is about 32488.4764185703. The cubic root of 1055501100 is about 1018.1682811908.

Adding to 1055501100 its reverse (11055501), we get a palindrome (1066556601).

The spelling of 1055501100 in words is "one billion, fifty-five million, five hundred one thousand, one hundred".