51140320501 has 2 divisors, whose sum is σ = 51140320502. Its totient is φ = 51140320500.

The previous prime is 51140320493. The next prime is 51140320513. The reversal of 51140320501 is 10502304115.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46569208401 + 4571112100 = 215799^2 + 67610^2 .

It is a cyclic number.

It is not a de Polignac number, because 51140320501 - 2³ = 51140320493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51140320201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25570160250 + 25570160251.

It is an arithmetic number, because the mean of its divisors is an integer number (25570160251).

Almost surely, 2^51140320501 is an apocalyptic number.

It is an amenable number.

51140320501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51140320501 is an equidigital number, since it uses as much as digits as its factorization.

51140320501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 51140320501 its reverse (10502304115), we get a palindrome (61642624616).

The spelling of 51140320501 in words is "fifty-one billion, one hundred forty million, three hundred twenty thousand, five hundred one".