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54287231 = 319411861
BaseRepresentation
bin1100111100010…
…1101101111111
310210011002002012
43033011231333
5102344142411
65215321435
71226301545
oct317055577
9123132065
1054287231
1128709889
121622027b
13b32992b
1472d1d95
154b7518b
hex33c5b7f

54287231 has 8 divisors (see below), whose sum is σ = 56128128. Its totient is φ = 52452000.

The previous prime is 54287221. The next prime is 54287263. The reversal of 54287231 is 13278245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54287231 - 222 = 50092927 is a prime.

It is a super-2 number, since 2×542872312 = 5894206899294722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54287221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28241 + ... + 30101.

It is an arithmetic number, because the mean of its divisors is an integer number (7016016).

Almost surely, 254287231 is an apocalyptic number.

54287231 is a deficient number, since it is larger than the sum of its proper divisors (1840897).

54287231 is a wasteful number, since it uses less digits than its factorization.

54287231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833.

The product of its digits is 13440, while the sum is 32.

The square root of 54287231 is about 7367.9869028114. The cubic root of 54287231 is about 378.6452939188.

The spelling of 54287231 in words is "fifty-four million, two hundred eighty-seven thousand, two hundred thirty-one".

Divisors: 1 31 941 1861 29171 57691 1751201 54287231