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54448131 = 318149377
BaseRepresentation
bin1100111110110…
…1000000000011
310210110020210110
43033231000003
5102414320011
65223002403
71230541623
oct317550003
9123406713
1054448131
1128809761
1216299403
13b384c3a
147334883
154ba7ba6
hex33ed003

54448131 has 4 divisors (see below), whose sum is σ = 72597512. Its totient is φ = 36298752.

The previous prime is 54448111. The next prime is 54448157. The reversal of 54448131 is 13184445.

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

It is not a de Polignac number, because 54448131 - 25 = 54448099 is a prime.

It is a super-2 number, since 2×544481312 = 5929197938786322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54448111) 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, 9074686 + ... + 9074691.

It is an arithmetic number, because the mean of its divisors is an integer number (18149378).

Almost surely, 254448131 is an apocalyptic number.

54448131 is a deficient number, since it is larger than the sum of its proper divisors (18149381).

54448131 is a wasteful number, since it uses less digits than its factorization.

54448131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18149380.

The product of its digits is 7680, while the sum is 30.

The square root of 54448131 is about 7378.8976819034. The cubic root of 54448131 is about 379.0190094034.

The spelling of 54448131 in words is "fifty-four million, four hundred forty-eight thousand, one hundred thirty-one".

Divisors: 1 3 18149377 54448131