51005050501 has 2 divisors, whose sum is σ = 51005050502. Its totient is φ = 51005050500.

The previous prime is 51005050483. The next prime is 51005050531. The reversal of 51005050501 is 10505050015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49617562500 + 1387488001 = 222750^2 + 37249^2 .

It is a cyclic number.

It is not a de Polignac number, because 51005050501 - 2¹¹ = 51005048453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51005050531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502525250 + 25502525251.

It is an arithmetic number, because the mean of its divisors is an integer number (25502525251).

Almost surely, 2^51005050501 is an apocalyptic number.

It is an amenable number.

51005050501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51005050501 is an equidigital number, since it uses as much as digits as its factorization.

51005050501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 625, while the sum is 22.

The spelling of 51005050501 in words is "fifty-one billion, five million, fifty thousand, five hundred one".