1055778540 has 48 divisors (see below), whose sum is σ = 3130075872. Its totient is φ = 264979456.

The previous prime is 1055778533. The next prime is 1055778569. The reversal of 1055778540 is 458775501.

It is a super-2 number, since 2×1055778540² = 2229336651049063200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055778492 and 1055778501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516519 + ... + 518558.

It is an arithmetic number, because the mean of its divisors is an integer number (65209914).

Almost surely, 2^1055778540 is an apocalyptic number.

1055778540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055778540 is an abundant number, since it is smaller than the sum of its proper divisors (2074297332).

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

1055778540 is a wasteful number, since it uses less digits than its factorization.

1055778540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035106 (or 1035104 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 42.

The square root of 1055778540 is about 32492.7459596754. The cubic root of 1055778540 is about 1018.2574823805.

The spelling of 1055778540 in words is "one billion, fifty-five million, seven hundred seventy-eight thousand, five hundred forty".