51215224051 has 2 divisors, whose sum is σ = 51215224052. Its totient is φ = 51215224050.

The previous prime is 51215224001. The next prime is 51215224103. The reversal of 51215224051 is 15042251215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51215224051 - 2¹³ = 51215215859 is a prime.

It is not a weakly prime, because it can be changed into another prime (51215224001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607612025 + 25607612026.

It is an arithmetic number, because the mean of its divisors is an integer number (25607612026).

Almost surely, 2^51215224051 is an apocalyptic number.

51215224051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51215224051 is an equidigital number, since it uses as much as digits as its factorization.

51215224051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 51215224051 its reverse (15042251215), we get a palindrome (66257475266).

The spelling of 51215224051 in words is "fifty-one billion, two hundred fifteen million, two hundred twenty-four thousand, fifty-one".