1020659550 has 24 divisors (see below), whose sum is σ = 2531236056. Its totient is φ = 272175840.

The previous prime is 1020659533. The next prime is 1020659551. The reversal of 1020659550 is 559560201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020659551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3402049 + ... + 3402348.

It is an arithmetic number, because the mean of its divisors is an integer number (105468169).

Almost surely, 2^1020659550 is an apocalyptic number.

1020659550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020659550 is an abundant number, since it is smaller than the sum of its proper divisors (1510576506).

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

1020659550 is a wasteful number, since it uses less digits than its factorization.

1020659550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804412 (or 6804407 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1020659550 is about 31947.7628324739. The cubic root of 1020659550 is about 1006.8396294814.

The spelling of 1020659550 in words is "one billion, twenty million, six hundred fifty-nine thousand, five hundred fifty".