8521745401 has 12 divisors (see below), whose sum is σ = 9234689472. Its totient is φ = 7860259056.

The previous prime is 8521745399. The next prime is 8521745411. The reversal of 8521745401 is 1045471258.

8521745401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8521745401 - 2¹ = 8521745399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8521745411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212580 + ... + 249466.

It is an arithmetic number, because the mean of its divisors is an integer number (769557456).

Almost surely, 2^8521745401 is an apocalyptic number.

It is an amenable number.

8521745401 is a deficient number, since it is larger than the sum of its proper divisors (712944071).

8521745401 is a wasteful number, since it uses less digits than its factorization.

8521745401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38280 (or 38267 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 8521745401 is about 92313.3002389147. The cubic root of 8521745401 is about 2042.5664067555.

The spelling of 8521745401 in words is "eight billion, five hundred twenty-one million, seven hundred forty-five thousand, four hundred one".