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8540897 = 53161149
BaseRepresentation
bin100000100101…
…001011100001
3121001220220112
4200211023201
54141302042
6503021105
7132411401
oct40451341
917056815
108540897
1149039a2
122a3a795
131a006b1
1411c4801
15b3a982
hex8252e1

8540897 has 4 divisors (see below), whose sum is σ = 8702100. Its totient is φ = 8379696.

The previous prime is 8540893. The next prime is 8540921. The reversal of 8540897 is 7980458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3013696 + 5527201 = 1736^2 + 2351^2 .

It is a cyclic number.

It is not a de Polignac number, because 8540897 - 22 = 8540893 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8540891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80522 + ... + 80627.

It is an arithmetic number, because the mean of its divisors is an integer number (2175525).

Almost surely, 28540897 is an apocalyptic number.

It is an amenable number.

8540897 is a deficient number, since it is larger than the sum of its proper divisors (161203).

8540897 is a wasteful number, since it uses less digits than its factorization.

8540897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161202.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 8540897 is about 2922.4813087512. The cubic root of 8540897 is about 204.4095402785.

The spelling of 8540897 in words is "eight million, five hundred forty thousand, eight hundred ninety-seven".

Divisors: 1 53 161149 8540897