8942521 has 16 divisors (see below), whose sum is σ = 10920960. Its totient is φ = 7151760.

The previous prime is 8942509. The next prime is 8942569. The reversal of 8942521 is 1252498.

8942521 = 34² + 35² + ... + 299².

8942521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8942521 - 2⁷ = 8942393 is a prime.

It is a Duffinian number.

8942521 is a lucky number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (8942501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8970 + ... + 9916.

It is an arithmetic number, because the mean of its divisors is an integer number (682560).

Almost surely, 2^8942521 is an apocalyptic number.

It is an amenable number.

8942521 is a deficient number, since it is larger than the sum of its proper divisors (1978439).

8942521 is a wasteful number, since it uses less digits than its factorization.

8942521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044.

The product of its digits is 5760, while the sum is 31.

The square root of 8942521 is about 2990.4048220935. The cubic root of 8942521 is about 207.5646172201.

The spelling of 8942521 in words is "eight million, nine hundred forty-two thousand, five hundred twenty-one".