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157081 is a prime number
BaseRepresentation
bin100110010110011001
321222110211
4212112121
520011311
63211121
71222651
oct462631
9258424
10157081
11a8021
1276aa1
1356662
1441361
1531821
hex26599

157081 has 2 divisors, whose sum is σ = 157082. Its totient is φ = 157080.

The previous prime is 157061. The next prime is 157103. The reversal of 157081 is 180751.

157081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (157103) can be obtained adding 157081 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90000 + 67081 = 300^2 + 259^2 .

It is an emirp because it is prime and its reverse (180751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157081 - 25 = 157049 is a prime.

It is a super-2 number, since 2×1570812 = 49348881122, which contains 22 as substring.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 157081 parts by 560 straight cuts.

It is not a weakly prime, because it can be changed into another prime (157051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78540 + 78541.

It is an arithmetic number, because the mean of its divisors is an integer number (78541).

2157081 is an apocalyptic number.

It is an amenable number.

157081 is a deficient number, since it is larger than the sum of its proper divisors (1).

157081 is an equidigital number, since it uses as much as digits as its factorization.

157081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 157081 is about 396.3344547223. The cubic root of 157081 is about 53.9561830196.

The spelling of 157081 in words is "one hundred fifty-seven thousand, eighty-one".