51528154049 has 2 divisors, whose sum is σ = 51528154050. Its totient is φ = 51528154048.

The previous prime is 51528153959. The next prime is 51528154061. The reversal of 51528154049 is 94045182515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47043441025 + 4484713024 = 216895^2 + 66968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51528154049 is a prime.

It is not a weakly prime, because it can be changed into another prime (51528154099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25764077024 + 25764077025.

It is an arithmetic number, because the mean of its divisors is an integer number (25764077025).

Almost surely, 2^51528154049 is an apocalyptic number.

It is an amenable number.

51528154049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51528154049 is an equidigital number, since it uses as much as digits as its factorization.

51528154049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 51528154049 in words is "fifty-one billion, five hundred twenty-eight million, one hundred fifty-four thousand, forty-nine".