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76532081 is a prime number
BaseRepresentation
bin1001000111111…
…00100101110001
312100000020021112
410203330211301
5124043011311
611332203105
71616340413
oct443744561
9170006245
1076532081
113a22275a
1221769495
1312b17a72
14a2429b3
156abb28b
hex48fc971

76532081 has 2 divisors, whose sum is σ = 76532082. Its totient is φ = 76532080.

The previous prime is 76532069. The next prime is 76532083. The reversal of 76532081 is 18023567.

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., 42706225 + 33825856 = 6535^2 + 5816^2 .

It is a cyclic number.

It is not a de Polignac number, because 76532081 - 214 = 76515697 is a prime.

It is a super-2 number, since 2×765320812 = 11714318844381122, which contains 22 as substring.

Together with 76532083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76532083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38266040 + 38266041.

It is an arithmetic number, because the mean of its divisors is an integer number (38266041).

Almost surely, 276532081 is an apocalyptic number.

It is an amenable number.

76532081 is a deficient number, since it is larger than the sum of its proper divisors (1).

76532081 is an equidigital number, since it uses as much as digits as its factorization.

76532081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 76532081 is about 8748.2615987406. The cubic root of 76532081 is about 424.5685698030.

The spelling of 76532081 in words is "seventy-six million, five hundred thirty-two thousand, eighty-one".