51122455451 has 2 divisors, whose sum is σ = 51122455452. Its totient is φ = 51122455450.

The previous prime is 51122455409. The next prime is 51122455487. The reversal of 51122455451 is 15455422115.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51122455451 is a prime.

It is a super-2 number, since 2×51122455451² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51122455151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25561227725 + 25561227726.

It is an arithmetic number, because the mean of its divisors is an integer number (25561227726).

Almost surely, 2^51122455451 is an apocalyptic number.

51122455451 is a deficient number, since it is larger than the sum of its proper divisors (1).

51122455451 is an equidigital number, since it uses as much as digits as its factorization.

51122455451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40000, while the sum is 35.

Adding to 51122455451 its reverse (15455422115), we get a palindrome (66577877566).

The spelling of 51122455451 in words is "fifty-one billion, one hundred twenty-two million, four hundred fifty-five thousand, four hundred fifty-one".