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254423149 is a prime number
BaseRepresentation
bin11110010101000…
…11000001101101
3122201202000221121
433022203001231
51010113020044
641125100541
76206363311
oct1712430155
9581660847
10254423149
11120684972
1271257751
1340930a56
1425b0bb41
1517509984
hexf2a306d

254423149 has 2 divisors, whose sum is σ = 254423150. Its totient is φ = 254423148.

The previous prime is 254423123. The next prime is 254423203. The reversal of 254423149 is 941324452.

254423149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251000649 + 3422500 = 15843^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 254423149 - 27 = 254423021 is a prime.

It is a super-2 number, since 2×2544231492 = 129462277494152402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254423749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127211574 + 127211575.

It is an arithmetic number, because the mean of its divisors is an integer number (127211575).

Almost surely, 2254423149 is an apocalyptic number.

It is an amenable number.

254423149 is a deficient number, since it is larger than the sum of its proper divisors (1).

254423149 is an equidigital number, since it uses as much as digits as its factorization.

254423149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 254423149 is about 15950.6472909409. The cubic root of 254423149 is about 633.6540395745.

The spelling of 254423149 in words is "two hundred fifty-four million, four hundred twenty-three thousand, one hundred forty-nine".