8942545 has 4 divisors (see below), whose sum is σ = 10731060. Its totient is φ = 7154032.

The previous prime is 8942509. The next prime is 8942569. The reversal of 8942545 is 5452498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452498 = 2 ⋅2726249.

It can be written as a sum of positive squares in 2 ways, for example, as 1456849 + 7485696 = 1207^2 + 2736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8942545 is a prime.

It is a super-2 number, since 2×8942545² = 159938222154050, which contains 22 as substring.

8942545 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894250 + ... + 894259.

It is an arithmetic number, because the mean of its divisors is an integer number (2682765).

Almost surely, 2^8942545 is an apocalyptic number.

It is an amenable number.

8942545 is a deficient number, since it is larger than the sum of its proper divisors (1788515).

8942545 is a wasteful number, since it uses less digits than its factorization.

8942545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788514.

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

The square root of 8942545 is about 2990.4088349254. The cubic root of 8942545 is about 207.5648029078.

The spelling of 8942545 in words is "eight million, nine hundred forty-two thousand, five hundred forty-five".