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127352161 is a prime number
BaseRepresentation
bin1111001011100…
…11110101100001
322212122011022201
413211303311201
5230100232121
620345333201
73104322046
oct745636541
9285564281
10127352161
1165983622
1236797201
13204cc511
1412cb11cd
15b2a8e91
hex7973d61

127352161 has 2 divisors, whose sum is σ = 127352162. Its totient is φ = 127352160.

The previous prime is 127352131. The next prime is 127352177. The reversal of 127352161 is 161253721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64641600 + 62710561 = 8040^2 + 7919^2 .

It is a cyclic number.

It is not a de Polignac number, because 127352161 - 27 = 127352033 is a prime.

It is a super-2 number, since 2×1273521612 = 32437145822739842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127352131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63676080 + 63676081.

It is an arithmetic number, because the mean of its divisors is an integer number (63676081).

Almost surely, 2127352161 is an apocalyptic number.

It is an amenable number.

127352161 is a deficient number, since it is larger than the sum of its proper divisors (1).

127352161 is an equidigital number, since it uses as much as digits as its factorization.

127352161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 127352161 is about 11285.0414709030. The cubic root of 127352161 is about 503.1167460858.

The spelling of 127352161 in words is "one hundred twenty-seven million, three hundred fifty-two thousand, one hundred sixty-one".