8521149 has 36 divisors (see below), whose sum is σ = 14353056. Its totient is φ = 4494672.

The previous prime is 8521141. The next prime is 8521171. The reversal of 8521149 is 9411258.

It is a happy number.

It is not a de Polignac number, because 8521149 - 2³ = 8521141 is a prime.

Its product of digits (2880) is a multiple of the sum of its prime factors (64).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 655467 + ... + 655479.

It is an arithmetic number, because the mean of its divisors is an integer number (398696).

Almost surely, 2^8521149 is an apocalyptic number.

It is an amenable number.

8521149 is a deficient number, since it is larger than the sum of its proper divisors (5831907).

8521149 is an frugal number, since it uses more digits than its factorization.

8521149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 23 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 8521149 is about 2919.1007176869. The cubic root of 8521149 is about 204.2518755443.

The spelling of 8521149 in words is "eight million, five hundred twenty-one thousand, one hundred forty-nine".