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BaseRepresentation
bin100110011001011111
321222202011
4212121133
520013104
63212051
71223353
oct463137
9258664
10157279
11a8191
1277027
1356785
1441463
1531904
hex2665f

157279 has 2 divisors, whose sum is σ = 157280. Its totient is φ = 157278.

The previous prime is 157277. The next prime is 157291. The reversal of 157279 is 972751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157279 - 21 = 157277 is a prime.

Together with 157277, it forms a pair of twin primes.

157279 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 157279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157271) 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, 78639 + 78640.

It is an arithmetic number, because the mean of its divisors is an integer number (78640).

2157279 is an apocalyptic number.

157279 is a deficient number, since it is larger than the sum of its proper divisors (1).

157279 is an equidigital number, since it uses as much as digits as its factorization.

157279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4410, while the sum is 31.

The square root of 157279 is about 396.5841650898. The cubic root of 157279 is about 53.9788440217.

The spelling of 157279 in words is "one hundred fifty-seven thousand, two hundred seventy-nine".