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54995 = 517647
BaseRepresentation
bin1101011011010011
32210102212
431123103
53224440
61102335
7316223
oct153323
983385
1054995
1138356
12279ab
131c055
1416083
1511465
hexd6d3

54995 has 8 divisors (see below), whose sum is σ = 69984. Its totient is φ = 41344.

The previous prime is 54983. The next prime is 55001. The reversal of 54995 is 59945.

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

It is not a de Polignac number, because 54995 - 24 = 54979 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239 + ... + 408.

It is an arithmetic number, because the mean of its divisors is an integer number (8748).

254995 is an apocalyptic number.

54995 is a deficient number, since it is larger than the sum of its proper divisors (14989).

54995 is a wasteful number, since it uses less digits than its factorization.

54995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its digits is 8100, while the sum is 32.

The square root of 54995 is about 234.5101277131. The cubic root of 54995 is about 38.0283721629.

Subtracting 54995 from its reverse (59945), we obtain a triangular number (4950 = T99).

It can be divided in two parts, 5499 and 5, that multiplied together give a triangular number (27495 = T234).

The spelling of 54995 in words is "fifty-four thousand, nine hundred ninety-five".

Divisors: 1 5 17 85 647 3235 10999 54995