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51232794449 is a prime number
BaseRepresentation
bin101111101101101101…
…100110011101010001
311220020111112121200112
4233231231212131101
51314411043410244
635311440331105
73462411365444
oct575555463521
9156214477615
1051232794449
111a800638841
129b19913a95
134aa62a70b5
1426a035965b
1514ecc0c39e
hexbedb66751

51232794449 has 2 divisors, whose sum is σ = 51232794450. Its totient is φ = 51232794448.

The previous prime is 51232794443. The next prime is 51232794451. The reversal of 51232794449 is 94449723215.

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., 32884195600 + 18348598849 = 181340^2 + 135457^2 .

It is a cyclic number.

It is not a de Polignac number, because 51232794449 - 224 = 51216017233 is a prime.

Together with 51232794451, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51232794397 and 51232794406.

It is not a weakly prime, because it can be changed into another prime (51232794443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25616397224 + 25616397225.

It is an arithmetic number, because the mean of its divisors is an integer number (25616397225).

Almost surely, 251232794449 is an apocalyptic number.

It is an amenable number.

51232794449 is a deficient number, since it is larger than the sum of its proper divisors (1).

51232794449 is an equidigital number, since it uses as much as digits as its factorization.

51232794449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The spelling of 51232794449 in words is "fifty-one billion, two hundred thirty-two million, seven hundred ninety-four thousand, four hundred forty-nine".