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155069 is a prime number
BaseRepresentation
bin100101110110111101
321212201022
4211312331
514430234
63153525
71214045
oct456675
9255638
10155069
11a6562
12758a5
1355775
1440725
1530e2e
hex25dbd

155069 has 2 divisors, whose sum is σ = 155070. Its totient is φ = 155068.

The previous prime is 155047. The next prime is 155081. The reversal of 155069 is 960551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 24025 = 362^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 155069 - 216 = 89533 is a prime.

It is a super-2 number, since 2×1550692 = 48092789522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77534 + 77535.

It is an arithmetic number, because the mean of its divisors is an integer number (77535).

2155069 is an apocalyptic number.

It is an amenable number.

155069 is a deficient number, since it is larger than the sum of its proper divisors (1).

155069 is an equidigital number, since it uses as much as digits as its factorization.

155069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 155069 is about 393.7880140380. The cubic root of 155069 is about 53.7248232549.

The spelling of 155069 in words is "one hundred fifty-five thousand, sixty-nine".