1055511106550 has 24 divisors (see below), whose sum is σ = 1963280653752. Its totient is φ = 422197992000.

The previous prime is 1055511106519. The next prime is 1055511106553. The reversal of 1055511106550 is 556011155501.

It is a super-2 number, since 2×1055511106550² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055511106550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055511106553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4448930 + ... + 4680170.

It is an arithmetic number, because the mean of its divisors is an integer number (81803360573).

Almost surely, 2^{1055511106550} is an apocalyptic number.

1055511106550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055511106550 is a deficient number, since it is larger than the sum of its proper divisors (907769547202).

1055511106550 is a wasteful number, since it uses less digits than its factorization.

1055511106550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322544 (or 322539 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 1055511106550 in words is "one trillion, fifty-five billion, five hundred eleven million, one hundred six thousand, five hundred fifty".