1055287278500 has 384 divisors, whose sum is σ = 2952614246400. Its totient is φ = 320466585600.

The previous prime is 1055287278427. The next prime is 1055287278523. The reversal of 1055287278500 is 58727825501.

It is a happy number.

It is a super-2 number, since 2×1055287278500² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 220354106 + ... + 220358894.

It is an arithmetic number, because the mean of its divisors is an integer number (7689099600).

Almost surely, 2^{1055287278500} is an apocalyptic number.

1055287278500 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 1055287278500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1476307123200).

1055287278500 is an abundant number, since it is smaller than the sum of its proper divisors (1897326967900).

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

1055287278500 is a wasteful number, since it uses less digits than its factorization.

1055287278500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024 (or 5012 counting only the distinct ones).

The product of its (nonzero) digits is 1568000, while the sum is 50.

The spelling of 1055287278500 in words is "one trillion, fifty-five billion, two hundred eighty-seven million, two hundred seventy-eight thousand, five hundred".