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54302161 = 73692
BaseRepresentation
bin1100111100100…
…1010111010001
310210011211120011
43033021113101
5102400132121
65215514521
71226363224
oct317112721
9123154504
1054302161
112871a021
1216228a41
13b333674
1472d75bb
154b797e1
hex33c95d1

54302161 has 3 divisors (see below), whose sum is σ = 54309531. Its totient is φ = 54294792.

The previous prime is 54302147. The next prime is 54302177. The reversal of 54302161 is 16120345.

The square root of 54302161 is 7369.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 50140561 + 4161600 = 7081^2 + 2040^2 .

It is not a de Polignac number, because 54302161 - 225 = 20747729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54302461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3685 + ... + 11053.

It is an arithmetic number, because the mean of its divisors is an integer number (18103177).

Almost surely, 254302161 is an apocalyptic number.

54302161 is the 7369-th square number.

54302161 is the 3685-th centered octagonal number.

It is an amenable number.

54302161 is a deficient number, since it is larger than the sum of its proper divisors (7370).

54302161 is an frugal number, since it uses more digits than its factorization.

54302161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14738 (or 7369 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The cubic root of 54302161 is about 378.6800022408.

The spelling of 54302161 in words is "fifty-four million, three hundred two thousand, one hundred sixty-one".

Divisors: 1 7369 54302161