1020053556 has 36 divisors (see below), whose sum is σ = 2589848352. Its totient is φ = 338517264.

The previous prime is 1020053539. The next prime is 1020053563. The reversal of 1020053556 is 6553500201.

1020053556 is a `hidden beast` number, since 102 + 0 + 0 + 5 + 3 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54240 + ... + 70583.

It is an arithmetic number, because the mean of its divisors is an integer number (71940232).

Almost surely, 2^1020053556 is an apocalyptic number.

It is an amenable number.

1020053556 is an abundant number, since it is smaller than the sum of its proper divisors (1569794796).

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

1020053556 is a wasteful number, since it uses less digits than its factorization.

1020053556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125060 (or 125055 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1020053556 is about 31938.2772860403. The cubic root of 1020053556 is about 1006.6403271230.

Adding to 1020053556 its reverse (6553500201), we get a palindrome (7573553757).

The spelling of 1020053556 in words is "one billion, twenty million, fifty-three thousand, five hundred fifty-six".