51046025449 has 2 divisors, whose sum is σ = 51046025450. Its totient is φ = 51046025448.

The previous prime is 51046025357. The next prime is 51046025467. The reversal of 51046025449 is 94452064015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25955465449 + 25090560000 = 161107^2 + 158400^2 .

It is a cyclic number.

It is not a de Polignac number, because 51046025449 - 2⁷ = 51046025321 is a prime.

It is not a weakly prime, because it can be changed into another prime (51046025249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25523012724 + 25523012725.

It is an arithmetic number, because the mean of its divisors is an integer number (25523012725).

Almost surely, 2^51046025449 is an apocalyptic number.

It is an amenable number.

51046025449 is a deficient number, since it is larger than the sum of its proper divisors (1).

51046025449 is an equidigital number, since it uses as much as digits as its factorization.

51046025449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 51046025449 in words is "fifty-one billion, forty-six million, twenty-five thousand, four hundred forty-nine".