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55501 is a prime number
BaseRepresentation
bin1101100011001101
32211010121
431203031
53234001
61104541
7320545
oct154315
984117
1055501
1138776
1228151
131c354
1416325
15116a1
hexd8cd

55501 has 2 divisors, whose sum is σ = 55502. Its totient is φ = 55500.

The previous prime is 55487. The next prime is 55511. The reversal of 55501 is 10555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 2601 = 230^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 55501 - 25 = 55469 is a prime.

It is a super-2 number, since 2×555012 = 6160722002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750 + 27751.

It is an arithmetic number, because the mean of its divisors is an integer number (27751).

255501 is an apocalyptic number.

It is an amenable number.

55501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55501 is an equidigital number, since it uses as much as digits as its factorization.

55501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 55501 is about 235.5865021600. The cubic root of 55501 is about 38.1446472235.

The spelling of 55501 in words is "fifty-five thousand, five hundred one".