51121550453 has 2 divisors, whose sum is σ = 51121550454. Its totient is φ = 51121550452.

The previous prime is 51121550449. The next prime is 51121550489. The reversal of 51121550453 is 35405512115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43839146884 + 7282403569 = 209378^2 + 85337^2 .

It is a cyclic number.

It is not a de Polignac number, because 51121550453 - 2² = 51121550449 is a prime.

It is a super-2 number, since 2×51121550453² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51121570453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560775226 + 25560775227.

It is an arithmetic number, because the mean of its divisors is an integer number (25560775227).

Almost surely, 2^51121550453 is an apocalyptic number.

It is an amenable number.

51121550453 is a deficient number, since it is larger than the sum of its proper divisors (1).

51121550453 is an equidigital number, since it uses as much as digits as its factorization.

51121550453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 51121550453 in words is "fifty-one billion, one hundred twenty-one million, five hundred fifty thousand, four hundred fifty-three".