1061605550 has 48 divisors (see below), whose sum is σ = 2009454720. Its totient is φ = 417212640.

The previous prime is 1061605537. The next prime is 1061605619. The reversal of 1061605550 is 555061601.

It is a super-2 number, since 2×1061605550² = 2254012687581605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 715109 + ... + 716591.

It is an arithmetic number, because the mean of its divisors is an integer number (41863640).

Almost surely, 2^1061605550 is an apocalyptic number.

1061605550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1061605550 is a deficient number, since it is larger than the sum of its proper divisors (947849170).

1061605550 is a wasteful number, since it uses less digits than its factorization.

1061605550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1061605550 is about 32582.2889005668. The cubic root of 1061605550 is about 1020.1273549811.

The spelling of 1061605550 in words is "one billion, sixty-one million, six hundred five thousand, five hundred fifty".