1016521550 has 24 divisors (see below), whose sum is σ = 2062615752. Its totient is φ = 369644000.

The previous prime is 1016521549. The next prime is 1016521559. The reversal of 1016521550 is 551256101.

It is a super-2 number, since 2×1016521550² = 2066632123228805000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016521559) 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, 923561 + ... + 924660.

It is an arithmetic number, because the mean of its divisors is an integer number (85942323).

Almost surely, 2^1016521550 is an apocalyptic number.

1016521550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1016521550 is an abundant number, since it is smaller than the sum of its proper divisors (1046094202).

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

1016521550 is a wasteful number, since it uses less digits than its factorization.

1016521550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848244 (or 1848239 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1016521550 is about 31882.9350907347. The cubic root of 1016521550 is about 1005.4771296151.

Adding to 1016521550 its reverse (551256101), we get a palindrome (1567777651).

The spelling of 1016521550 in words is "one billion, sixteen million, five hundred twenty-one thousand, five hundred fifty".