51551526473 has 2 divisors, whose sum is σ = 51551526474. Its totient is φ = 51551526472.

The previous prime is 51551526407. The next prime is 51551526517. The reversal of 51551526473 is 37462515515.

It is an a-pointer prime, because the next prime (51551526517) can be obtained adding 51551526473 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36766912009 + 14784614464 = 191747^2 + 121592^2 .

It is a cyclic number.

It is not a de Polignac number, because 51551526473 - 2²⁸ = 51283091017 is a prime.

It is not a weakly prime, because it can be changed into another prime (51551526373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25775763236 + 25775763237.

It is an arithmetic number, because the mean of its divisors is an integer number (25775763237).

Almost surely, 2^51551526473 is an apocalyptic number.

It is an amenable number.

51551526473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51551526473 is an equidigital number, since it uses as much as digits as its factorization.

51551526473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630000, while the sum is 44.

The spelling of 51551526473 in words is "fifty-one billion, five hundred fifty-one million, five hundred twenty-six thousand, four hundred seventy-three".