1016521055 has 8 divisors (see below), whose sum is σ = 1330718544. Its totient is φ = 739288000.

The previous prime is 1016521007. The next prime is 1016521057. The reversal of 1016521055 is 5501256101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1016521055 - 2¹⁰ = 1016520031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016521057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9241046 + ... + 9241155.

It is an arithmetic number, because the mean of its divisors is an integer number (166339818).

Almost surely, 2^1016521055 is an apocalyptic number.

1016521055 is a deficient number, since it is larger than the sum of its proper divisors (314197489).

1016521055 is a wasteful number, since it uses less digits than its factorization.

1016521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18482217.

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

The square root of 1016521055 is about 31882.9273279603. The cubic root of 1016521055 is about 1005.4769664078.

Adding to 1016521055 its reverse (5501256101), we get a palindrome (6517777156).

The spelling of 1016521055 in words is "one billion, sixteen million, five hundred twenty-one thousand, fifty-five".