8516534401 has 8 divisors (see below), whose sum is σ = 8585073000. Its totient is φ = 8448147840.

The previous prime is 8516534399. The next prime is 8516534413. The reversal of 8516534401 is 1044356158.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6656400 + 8509878001 = 2580^2 + 92249^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8516534401 - 2¹ = 8516534399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8516534431) 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, 75835 + ... + 150943.

It is an arithmetic number, because the mean of its divisors is an integer number (1073134125).

Almost surely, 2^8516534401 is an apocalyptic number.

It is an amenable number.

8516534401 is a deficient number, since it is larger than the sum of its proper divisors (68538599).

8516534401 is a wasteful number, since it uses less digits than its factorization.

8516534401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76019.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 8516534401 is about 92285.0713875218. The cubic root of 8516534401 is about 2042.1499825245.

The spelling of 8516534401 in words is "eight billion, five hundred sixteen million, five hundred thirty-four thousand, four hundred one".