51144601331 has 2 divisors, whose sum is σ = 51144601332. Its totient is φ = 51144601330.

The previous prime is 51144601301. The next prime is 51144601357. The reversal of 51144601331 is 13310644115.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51144601331 is a prime.

It is a super-2 number, since 2×51144601331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51144601294 and 51144601303.

It is not a weakly prime, because it can be changed into another prime (51144601301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25572300665 + 25572300666.

It is an arithmetic number, because the mean of its divisors is an integer number (25572300666).

Almost surely, 2^51144601331 is an apocalyptic number.

51144601331 is a deficient number, since it is larger than the sum of its proper divisors (1).

51144601331 is an equidigital number, since it uses as much as digits as its factorization.

51144601331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 51144601331 in words is "fifty-one billion, one hundred forty-four million, six hundred one thousand, three hundred thirty-one".