8452101821 has 8 divisors (see below), whose sum is σ = 8472286200. Its totient is φ = 8431937280.

The previous prime is 8452101811. The next prime is 8452101829. The reversal of 8452101821 is 1281012548.

It can be written as a sum of positive squares in 4 ways, for example, as 250082596 + 8202019225 = 15814^2 + 90565^2 .

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 8452101821 - 2¹⁴ = 8452085437 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 (8452101829) 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, 1150841 + ... + 1158161.

It is an arithmetic number, because the mean of its divisors is an integer number (1059035775).

Almost surely, 2^8452101821 is an apocalyptic number.

It is an amenable number.

8452101821 is a deficient number, since it is larger than the sum of its proper divisors (20184379).

8452101821 is a wasteful number, since it uses less digits than its factorization.

8452101821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9919.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 8452101821 is about 91935.3132425185. The cubic root of 8452101821 is about 2036.9869190516.

The spelling of 8452101821 in words is "eight billion, four hundred fifty-two million, one hundred one thousand, eight hundred twenty-one".