1020055560 has 64 divisors (see below), whose sum is σ = 3090502080. Its totient is φ = 269318400.

The previous prime is 1020055549. The next prime is 1020055577. The reversal of 1020055560 is 655500201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1020055560.

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, 29962 + ... + 54201.

It is an arithmetic number, because the mean of its divisors is an integer number (48289095).

Almost surely, 2^1020055560 is an apocalyptic number.

1020055560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020055560 is an abundant number, since it is smaller than the sum of its proper divisors (2070446520).

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

1020055560 is a wasteful number, since it uses less digits than its factorization.

1020055560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84278 (or 84274 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1020055560 is about 31938.3086590383. The cubic root of 1020055560 is about 1006.6409863386.

Adding to 1020055560 its reverse (655500201), we get a palindrome (1675555761).

The spelling of 1020055560 in words is "one billion, twenty million, fifty-five thousand, five hundred sixty".