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61379 is a prime number
BaseRepresentation
bin1110111111000011
310010012022
432333003
53431004
61152055
7343643
oct167703
9103168
1061379
114212a
122b62b
1321c26
1418523
15132be
hexefc3

61379 has 2 divisors, whose sum is σ = 61380. Its totient is φ = 61378.

The previous prime is 61363. The next prime is 61381. The reversal of 61379 is 97316.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61379 - 24 = 61363 is a prime.

Together with 61381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30689 + 30690.

It is an arithmetic number, because the mean of its divisors is an integer number (30690).

261379 is an apocalyptic number.

61379 is a deficient number, since it is larger than the sum of its proper divisors (1).

61379 is an equidigital number, since it uses as much as digits as its factorization.

61379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 61379 is about 247.7478556920. The cubic root of 61379 is about 39.4463299296.

Subtracting 61379 from its reverse (97316), we obtain a cube (35937 = 333).

The spelling of 61379 in words is "sixty-one thousand, three hundred seventy-nine".